Double Rj45 Socket Guide: Performance, Properties, and Types for Industrial Applications

Types of Double RJ45 Sockets

A double RJ45 socket, commonly referred to as a dual Ethernet port outlet, is designed to provide two network connection points within a single wall or panel-mounted unit. These sockets accept standard 8P8C modular connectors and are essential in modern networking environments where multiple devices require wired internet access. Supporting cable categories such as Cat5e, Cat6, Cat6a, and Cat7, double RJ45 sockets deliver high bandwidth, reduced crosstalk, and reliable performance—making them ideal for residential, commercial, and data center applications.

Available in various configurations, double RJ45 sockets are engineered to meet diverse installation needs, from basic connectivity to high-performance and secure networking. Below is a detailed breakdown of the most common types and their respective advantages.

Standard Double RJ45 Socket

Basic dual-port Ethernet sockets designed for general-purpose network installations.

Advantages

• Space-efficient design with two ports in one unit
• Widely compatible with Cat5e/Cat6 cables
• Easy to install in residential and office environments
• Cost-effective solution for multi-device setups

Limitations

• Limited to standard performance levels
• Minimal protection against dust or tampering
• Not optimized for high-speed data centers

Best for: Homes, small offices, dorm rooms, and areas needing dual connectivity

Keystone Double RJ45 Socket

Modular sockets that fit into keystone wall plates or patch panels for customizable setups.

Advantages

• Part of a universal keystone system (supports audio, video, USB, etc.)
• Easy to replace or reconfigure
• Ideal for structured cabling in professional environments
• Provides a clean, organized appearance in multi-port installations

Limitations

• Requires compatible keystone plate or faceplate
• Slightly more complex installation than fixed sockets
• Quality varies between brands and materials

Best for: Corporate offices, media rooms, server rooms, and AV installations

Cat6 / Cat6a Double RJ45 Socket

High-performance sockets engineered for Gigabit and 10-Gigabit Ethernet networks.

Advantages

• Supports up to 10 Gbps (Cat6a) over 100 meters
• Superior crosstalk and EMI interference reduction
• Backward compatible with Cat5e and lower
• Shielded versions available for noisy environments

Limitations

• Higher cost than standard sockets
• Requires precise termination for optimal performance
• Shielded variants need proper grounding

Best for: Data centers, enterprise networks, high-bandwidth applications

Shuttered Double RJ45 Socket

Features protective shutters that cover ports when not in use.

Advantages

• Prevents dust, dirt, and debris from entering ports
• Reduces risk of tampering or accidental damage
• Enhances longevity and reliability in harsh environments
• Improves safety in industrial or public settings

Limitations

• Slightly higher insertion force required
• Potential for shutter mechanism wear over time
• Limited availability and higher cost

Best for: Industrial facilities, schools, hospitals, and outdoor enclosures

Inline Double RJ45 Socket

Used to extend or split a network cable run with two connection points in-line.

Advantages

• Extends cable reach without splicing
• Allows two devices to share a single network line
• Compact and portable solution for temporary setups
• Maintains signal integrity with proper shielding

Limitations

• Not suitable for permanent installations
• Can introduce signal loss if low quality
• Exposure to environmental factors if not protected

Best for: Temporary networks, workstations, event setups, and cable extensions

Panel-Mounted Double RJ45 Socket

Designed for integration into equipment enclosures, racks, or control panels.

Advantages

• Secure, flush-mounted installation
• Durable metal or reinforced plastic housing
• Ideal for industrial and server rack applications
• Supports organized, professional cabling layouts

Limitations

• Installation requires drilling or panel modification
• Less flexible for repositioning
• Typically more expensive than wall-mounted variants

Best for: Server racks, industrial control systems, broadcast equipment, and telecom cabinets

Type	Performance Level	Durability	Best Use Case	Cable Support
Standard Double RJ45	Up to 1 Gbps (Cat6)	Medium	Home/Office Connectivity	Cat5e, Cat6
Keystone Double RJ45	Up to 10 Gbps (with Cat6a)	High	Structured Cabling	Cat5e to Cat6a
Cat6/Cat6a Double RJ45	1–10 Gbps	Very High	Data Centers, Enterprise	Cat6, Cat6a, Cat7
Shuttered Double RJ45	Up to 10 Gbps	Very High	Industrial, Public Spaces	Cat5e to Cat6a
Inline Double RJ45	Up to 1 Gbps	Low–Medium	Temporary Extensions	Cat5e, Cat6
Panel-Mounted Double RJ45	Up to 10 Gbps	Very High	Server Racks, Equipment	Cat6, Cat6a, Cat7

Expert Tip: When installing high-speed Cat6a or shielded double RJ45 sockets, ensure proper grounding and use certified patch cables to maintain signal integrity and avoid performance bottlenecks in your network infrastructure.

Function, Features, and Design of Double RJ45 Sockets

Double RJ45 sockets are essential components in modern network infrastructure, offering a compact and efficient solution for environments requiring multiple Ethernet connections. By integrating two RJ45 ports into a single unit, these sockets streamline cabling, reduce wall clutter, and enhance connectivity in homes, offices, data centers, and commercial buildings. Their intelligent design and robust functionality make them a preferred choice for both professional installations and DIY networking projects.

Core Functionality

The primary function of a double RJ45 socket is to provide dual network connectivity from a single mounting point. This allows two devices—such as desktop computers, IP phones, printers, security cameras, or VoIP systems—to connect directly to the network without requiring separate wall outlets or additional networking hardware like switches or hubs.

This dual-port capability is particularly valuable in space-constrained environments or areas with high device density. For example, in office cubicles, conference rooms, or server rooms, double RJ45 sockets eliminate the need for daisy-chaining devices or using extension cables, thereby improving network reliability and reducing potential points of failure.

Additionally, by minimizing the number of wall penetrations and installation points, double sockets contribute to cleaner aesthetics, simplified cable management, and lower installation costs—making them a cost-effective and scalable solution for structured cabling systems.

Key Features and Benefits

Dual-Port Configuration

Equipped with two independent Ethernet ports, double RJ45 sockets enable simultaneous connections for two devices. Each port operates at full bandwidth, ensuring no compromise in speed or performance. This is ideal for workstations that require both a computer and a VoIP phone, or in smart home setups where multiple IoT devices share a single location.

Broad Cable Compatibility

Most double RJ45 sockets support a wide range of Ethernet cable categories, including Cat5e, Cat6, Cat6a, and Cat7. This backward and forward compatibility ensures seamless integration into both legacy and future-proof networks. High-category support enables transmission speeds of up to 10 Gbps (with Cat6a/Cat7), making them suitable for high-bandwidth applications like video conferencing, large file transfers, and cloud computing.

Easy and Modular Installation

Designed for simplicity, many double RJ45 sockets follow the keystone jack standard, allowing them to be easily snapped into modular wall plates, patch panels, or surface-mount boxes. This modularity supports flexible configurations and quick upgrades. DIY users and professional installers alike benefit from tool-less designs and color-coded wiring guides (T568A/T568B), reducing installation time and errors.

Durable and Reliable Construction

Manufactured from high-quality thermoplastics and metal shielding, double RJ45 sockets are built to withstand repeated plugging and unplugging. Gold-plated contacts resist corrosion and ensure consistent conductivity, while rugged housings protect against impact, dust, and environmental wear—making them ideal for industrial, educational, and commercial settings with high usage demands.

Superior Signal Integrity

Engineered to minimize crosstalk, electromagnetic interference (EMI), and signal loss, these sockets maintain optimal signal quality across both ports. Features such as internal separation walls, shielded variants (for Cat6a and above), and precision-wired contacts ensure compliance with industry standards (e.g., TIA/EIA-568). This results in stable, low-latency connections critical for real-time applications like online gaming, HD streaming, and enterprise VoIP systems.

Enhanced Port Protection

Some advanced models include protective shutters that cover the ports when not in use. These shutters prevent dust, debris, and accidental contact with internal pins, improving longevity and safety—especially in dusty environments or child-accessible areas. They also help maintain the cleanliness of the contact surfaces, which is crucial for maintaining reliable connections over time.

Design and Integration

The design of a double RJ45 socket prioritizes both functionality and aesthetics. The two ports are precisely spaced to accommodate standard Ethernet connectors without interference, even when both are in use. Most units are designed to fit standard wall boxes (e.g., single-gang or double-gang electrical boxes), ensuring compatibility with existing building infrastructure.

Available in various finishes—such as white, black, brushed metal, or customizable faceplates—double RJ45 sockets blend seamlessly into modern interiors. Their low-profile design contributes to a clean, professional appearance, especially in executive offices, meeting rooms, or media centers.

Modular keystone designs allow for mixed configurations (e.g., combining an RJ45 socket with HDMI, USB, or fiber ports), offering a fully customized connectivity solution. This flexibility supports evolving technology needs and future upgrades without requiring major rewiring.

Feature	Benefit	Recommended Use Case
Dual Independent Ports	Connect two devices without a switch	Office desks, home workstations, hotel rooms
Cat6/Cat6a Support	Up to 10 Gbps data transfer	Data centers, gaming setups, 4K streaming
Shielded (STP) Option	Reduced EMI in noisy environments	Industrial facilities, server rooms, hospitals
Keystone Modular Design	Easy integration into custom faceplates	Conference rooms, AV installations, smart homes
Dust-Resistant Shutters	Extended port lifespan and safety	Public spaces, schools, outdoor enclosures

Important: Always verify the category rating (e.g., Cat6) and shielding type (UTP/STP) of the double RJ45 socket to match your network’s performance requirements. Improper installation or mismatched components can degrade signal quality and limit network speed. Use certified cables and follow termination standards (T568A/B) for optimal results. For high-speed networks, consider shielded variants and grounding practices to prevent interference.

Scenarios for Double RJ45 Sockets: Optimized Connectivity Across Environments

Double RJ45 wall sockets have become essential components in modern structured cabling systems, offering dual Ethernet connectivity from a single wall outlet. Their versatility supports a wide range of applications across commercial, residential, educational, and industrial settings. By enabling two simultaneous wired network connections, these sockets enhance reliability, reduce cable clutter, and future-proof network infrastructure.

Office Environments

In high-density office spaces, efficient and organized network connectivity is critical for productivity. A double RJ45 socket allows employees to connect both their desktop computer and VoIP phone—or a printer and laptop—using a single wall point, minimizing the need for additional outlets or network switches.

These sockets maintain a clean, professional appearance by consolidating connections into one discreet location. They are compatible with Cat5e, Cat6, and Cat6a cables, supporting gigabit and multi-gigabit Ethernet speeds required for modern business applications, video conferencing, and cloud-based services.

Key Benefits:

• Reduces cable clutter and improves workspace aesthetics
• Supports converged voice and data networks (e.g., PoE phones)
• Enables quick device swaps without rewiring
• Compatible with high-speed Ethernet standards (up to 10 Gbps with Cat6a)

Residential Smart Homes

Modern smart homes rely on stable, high-bandwidth connections for seamless operation of entertainment, security, and remote work systems. A double RJ45 socket provides dedicated wired links for devices such as gaming consoles, 4K/8K smart TVs, home servers, and work-from-home PCs—ensuring low latency and consistent performance.

Unlike Wi-Fi, which can suffer from interference and signal degradation through walls, wired connections eliminate buffering during streaming and lag in online gaming. Installing double sockets in key areas (e.g., living rooms, home offices) reduces reliance on wireless extenders and mesh systems, enhancing overall network stability.

Key Benefits:

• Ensures stable, high-speed internet for bandwidth-intensive applications
• Supports lag-free gaming and uninterrupted 4K/8K video streaming
• Facilitates reliable home office setups with minimal downtime
• Future-proofs homes for emerging IoT and AV technologies

Data Centers and Server Rooms

In data centers and server rooms, where uptime and performance are paramount, double RJ45 sockets play a crucial role in managing high-density network topologies. These sockets allow for redundant connections or the linking of multiple devices—such as servers, switches, and management consoles—from a single wall or patch panel location.

They support structured cabling standards and help streamline cable management, reducing the risk of accidental disconnections. With support for high-frequency transmission (up to 500 MHz with Cat6a), they meet the demands of 10 Gigabit Ethernet and beyond, ensuring rapid data transfer and minimal latency.

Key Benefits:

• Enables network redundancy and failover configurations
• Optimizes space utilization in high-density racks and cabinets
• Improves airflow and cooling efficiency by reducing cable congestion
• Supports enterprise-grade speeds and low-latency communication

Educational Institutions

Schools, universities, and training centers require robust network infrastructure to support digital learning environments. Double RJ45 sockets in classrooms, libraries, and computer labs allow simultaneous connections for student workstations, teacher laptops, projectors, interactive whiteboards, and audio-visual equipment.

This ensures equitable access to online educational resources, e-learning platforms, and cloud-based collaboration tools. The reliability of wired connections is especially important during exams, virtual lectures, and multimedia presentations where network interruptions could disrupt learning.

Key Benefits:

• Supports multiple devices per learning station without Wi-Fi congestion
• Ensures uninterrupted access to educational platforms and testing systems
• Enhances security by reducing reliance on public or shared wireless networks
• Facilitates integration with AV and smart classroom technologies

Industrial and Commercial Settings

In warehouses, factories, retail stores, and logistics centers, network reliability is vital for point-of-sale (POS) systems, inventory management, surveillance cameras, and industrial control systems. Double RJ45 sockets provide durable, long-lasting connections that withstand harsh conditions, including dust, vibration, and frequent handling.

Many industrial-grade double sockets come with protective shutters that prevent dust ingress and accidental damage, making them ideal for environments where cables are frequently plugged and unplugged. These sockets ensure continuous connectivity for mission-critical operations, improving efficiency and reducing downtime.

Key Benefits:

• Withstands rugged environments with dust- and impact-resistant designs
• Supports reliable POS, security, and monitoring systems
• Reduces network failures due to loose or damaged connections
• Shuttered models protect against tampering and environmental exposure

Professional Recommendation: When designing network infrastructure, consider installing double RJ45 sockets as a standard—even in areas where only one connection is currently needed. This provides flexibility for future expansion, supports device redundancy, and avoids costly retrofitting later. For optimal performance, use shielded Cat6a cables with grounded outlets in electrically noisy environments like factories or data centers.

Environment	Primary Use Cases	Recommended Cable Type	Special Features
Office	PCs, VoIP phones, printers	Cat6 (unshielded)	Low-profile wall plates, color-coded ports
Residential	Smart TVs, gaming consoles, home offices	Cat6 or Cat6a	Wall-mount or surface-mount options
Data Center	Servers, switches, management consoles	Cat6a (shielded)	High-density panels, labeled ports
Educational	Student PCs, projectors, AV systems	Cat6 (unshielded or F/UTP)	Durable faceplates, tamper-resistant
Industrial	POS, cameras, control systems	Cat6a (STP or FTP)	Shuttered ports, IP-rated enclosures

Additional Considerations for Double RJ45 Installations

• Future-Proofing: Installing dual ports prepares spaces for increased device density and evolving technology needs.
• Cable Management: Use labeled patch panels and structured cabling to simplify troubleshooting and maintenance.
• Power over Ethernet (PoE): Double sockets are ideal for powering devices like IP cameras, access points, and VoIP phones over a single cable.
• Compliance: Ensure installations meet local electrical codes and TIA/EIA-568 standards for network cabling.
• Aesthetics: Choose wall plates that match room decor—available in various colors, finishes, and styles (e.g., brushed metal, matte white).

How to Choose the Best Double RJ45 Socket: A Comprehensive Buyer’s Guide

Selecting the right double RJ45 socket is essential for ensuring reliable, high-speed network connectivity in homes, offices, and industrial environments. The right choice enhances performance, durability, and ease of installation while supporting current and future networking needs. This guide breaks down the key considerations to help you make an informed decision when purchasing a double RJ45 socket.

Important Note: Always verify compatibility with your existing cabling and network standards. Mismatched components can lead to reduced performance, signal loss, or future upgrade limitations.

Key Factors to Consider When Choosing a Double RJ45 Socket

1. Operating Environment and Durability
   • In industrial or commercial settings where equipment is subject to frequent use or harsh conditions, opt for a socket with a rugged, impact-resistant housing made from high-grade thermoplastics or metal alloys.
   • For residential or office environments, prioritize sleek, low-profile designs that blend with interior décor. White, beige, or brushed metal finishes are commonly preferred.
   • If the socket will be installed in high-traffic areas or locations accessible to children, choose a shuttered RJ45 wall plate. These feature protective covers over each port that prevent dust ingress and accidental insertion of foreign objects, improving safety and longevity.
   • Consider IP-rated (Ingress Protection) wall plates for outdoor or semi-outdoor installations to guard against moisture and particulate contamination.
2. Type of Installation and Mounting Style
   • Modular Keystone Jacks: Ideal for structured cabling systems. These allow you to customize wall plates or patch panels by combining two RJ45 keystones with other types (e.g., HDMI, USB, fiber). They offer flexibility and are easy to replace or upgrade individually.
   • Fixed Panel-Mounted Sockets: Best suited for permanent installations in server rooms, network cabinets, or dedicated AV racks. These provide a clean, professional appearance and are often used with blank faceplates in patch panels.
   • Surface-mounted vs. flush-mounted options: Choose flush-mounted sockets for a seamless wall integration, or surface-mounted variants for easier retrofitting without wall modifications.
3. Network Performance and Cable Compatibility
   • Ensure the socket matches the category of your Ethernet cabling. Common standards include:
     • Cat5e: Supports up to 1 Gbps (Gigabit Ethernet) at 100 MHz – suitable for basic home and office networks.
     • Cat6: Handles up to 1 Gbps (and 10 Gbps over short distances) at 250 MHz – ideal for high-speed applications and future-proofing.
     • Cat6a: Supports 10 Gbps at 500 MHz with improved shielding – recommended for data centers and high-bandwidth environments.
     • Cat7/Cat7a: Offers up to 600–1000 MHz with full shielding (S/FTP) – best for demanding professional installations requiring minimal crosstalk and EMI resistance.
   • For high-speed or multi-gigabit networks (e.g., 2.5G, 5G, or 10G Ethernet), use Cat6 or higher-rated sockets to minimize signal degradation, crosstalk, and latency.
   • Shielded (STP or S/FTP) sockets are recommended in electrically noisy environments (e.g., near motors, power lines, or industrial machinery) to maintain signal integrity.
4. Installation Ease and User-Friendly Design
   • Look for sockets designed with DIY users in mind, such as snap-in keystone jacks that require no tools for mounting into wall plates or patch panels.
   • Some models feature tool-less termination or punch-down blocks with clear wire guides, reducing installation time and errors.
   • Screwless or quick-mount faceplates simplify wall installation and allow for easy access during maintenance.
   • Color-coded wiring diagrams (T568A/T568B) printed directly on the socket help ensure correct cable termination.
5. Build Quality and Long-Term Reliability
   • Prioritize sockets made from high-quality materials like phosphor bronze contacts with gold plating (typically 50µm) for superior conductivity and corrosion resistance.
   • The housing should be flame-retardant (UL94-V0 rated) and resistant to yellowing or cracking over time.
   • High-cycle durability: Choose sockets rated for at least 750+ plug insertions to ensure longevity in frequently used locations.
   • Well-branded, certified products (e.g., TIA/EIA, ISO/IEC compliant) offer better assurance of performance and reliability.

Selection Factor	Best For	Avoid In	Recommended Features
Shuttered Ports	Public areas, homes with children, dusty environments	Controlled server rooms with minimal exposure	Dust covers, child-safe shutters, IP20 rating
Modular Keystone	Custom setups, multi-port wall plates, future upgrades	Permanent installations requiring tamper resistance	Tool-less snap-in, compatibility with standard faceplates
Cat6 or Higher	High-speed networks, 4K streaming, VoIP, smart offices	Basic internet browsing on older devices	250+ MHz bandwidth, low crosstalk design
Shielded (S/FTP)	Industrial settings, EMI-heavy environments	Residential networks with short cable runs	Foil + braid shielding, grounding tab
Flush-Mounted	New construction, clean aesthetic finishes	Retrofitting without wall access	Standard back box compatibility, depth clearance

Expert Tip: When installing double RJ45 sockets, label each port clearly (e.g., "LAN 1", "VoIP", "Security Camera") to simplify troubleshooting and network management. Use color-coded cables or inserts for even faster identification.

Additional Recommendations

• Always purchase from reputable suppliers or manufacturers with proven track records in networking hardware (e.g., Legrand, Schneider Electric, Siemon, Panduit, or CommScope).
• Check warranty terms—reliable brands often offer 10–25 year performance guarantees.
• Consider purchasing sockets in bulk if outfitting multiple rooms or an entire building to ensure consistency and reduce long-term costs.
• Pair your socket with high-quality patch cables and proper cable management for optimal performance.
• Test the connection with a cable certifier or network tester after installation to verify signal integrity and compliance with category standards.

Choosing the right double RJ45 socket is more than just a technical decision—it's an investment in your network’s performance, scalability, and reliability. By carefully evaluating your environment, performance needs, and installation requirements, you can select a solution that delivers stable, high-speed connectivity for years to come. Whether you're setting up a home office, upgrading a commercial network, or building a smart home infrastructure, the right socket makes all the difference.

Frequently Asked Questions About Double RJ45 Sockets

Q1: What exactly is a double RJ45 socket?

A double RJ45 socket, also known as a dual-port Ethernet wall socket, is a network interface designed to support two separate Ethernet connections within a single mounting unit. This allows two devices—such as computers, IP phones, security cameras, or access points—to connect to the network simultaneously without requiring additional wall plates or outlets.

These sockets are commonly used in structured cabling systems and are available in both shielded (STP) and unshielded (UTP) variants to suit different network environments. They are typically installed in walls, desks, or patch panels and are compatible with standard keystone jacks or modular faceplates.

Q2: Which environments benefit the most from using a double RJ45 socket?

Double RJ45 sockets are ideal for environments where space efficiency and multiple wired connections are essential. Key applications include:

• Office Spaces: Enable dual connectivity at workstations for desktop PCs and VoIP phones or laptops and monitors with Ethernet capability.
• Data Centres: Facilitate high-density cabling in server racks and patch panels, reducing clutter and improving cable management.
• Smart Homes: Support simultaneous connections for smart TVs, gaming consoles, and home automation hubs in entertainment or home office setups.
• Educational Institutions: Provide reliable wired access for student workstations, lab computers, and interactive whiteboards in classrooms and libraries.
• Industrial & Commercial Facilities: Connect surveillance systems, access control panels, and industrial IoT devices where stable, high-speed networking is critical.

Their compact design makes them especially useful in areas where wall space is limited but multiple network drops are needed.

Q3: What are the important features of double RJ45 sockets?

High-quality double RJ45 sockets offer several key features that ensure performance, durability, and ease of use:

• Dual-Port Configuration: Two independent Ethernet ports in a single unit, often supporting 8P8C modular jacks for standard Cat5e, Cat6, or Cat6a cables.
• High-Speed Compatibility: Designed to support Gigabit Ethernet (1000BASE-T) and even 10-Gigabit networks when paired with appropriate cabling (e.g., Cat6a or Cat7).
• Signal Integrity: Features like gold-plated contacts, twisted pair separation, and shielding options help reduce crosstalk and electromagnetic interference (EMI).
• Durable Build Quality: Constructed from high-impact plastic or metal housings to withstand frequent plugging and unplugging.
• Easy Installation: Compatible with standard mounting boxes (e.g., single-gang or double-gang electrical boxes) and often feature tool-less termination or punch-down mechanisms for quick setup.
• Labeling Options: Many models include port labels or blank inserts for identifying connected devices or zones.

These features collectively ensure reliable, long-term network performance in both residential and enterprise settings.

Q4: What should one consider to make the right choice of a double RJ45 socket?

Selecting the best double RJ45 socket involves evaluating several factors based on your specific networking needs:

• Network Speed Requirements: Choose a socket rated for your cable category (e.g., Cat6 or Cat6a) to support current and future bandwidth demands, especially for Gigabit or 10G networks.
• Installation Environment: In high-interference areas (e.g., industrial sites), opt for shielded (STP) versions with proper grounding. For homes or offices, unshielded (UTP) models may suffice.
• Mounting Type: Decide between surface-mounted, flush-mounted, or desk-integrated sockets depending on room layout and aesthetic preferences.
• Build Quality: Look for fire-resistant materials (e.g., UL94-V0 rated), robust connectors, and reputable brand certifications (TIA/EIA, ISO/IEC).
• Future-Proofing: Consider sockets with higher ratings than currently needed to accommodate network upgrades without rewiring.
• Aesthetics & Integration: Choose color and design (white, beige, black, etc.) that matches interior decor or office standards.

By carefully assessing these aspects, you can ensure optimal performance, scalability, and reliability of your network infrastructure.

Q5: Do double RJ45 sockets support high-speed networks?

Yes, modern double RJ45 sockets are engineered to support high-speed network environments, provided they are properly matched with the correct category of Ethernet cabling and installation practices. Here’s how they maintain performance:

Socket Category	Max Data Rate	Bandwidth	Recommended Use
Cat5e-rated	1 Gbps	100 MHz	Home networks, small offices
Cat6-rated	1 Gbps (up to 10 Gbps over short distances)	250 MHz	Medium-sized businesses, gaming setups
Cat6a-rated	10 Gbps	500 MHz	Data centres, high-performance networks
Cat7/Cat8	10–40 Gbps	600–2000 MHz	Industrial, enterprise backbones

When installed correctly using proper termination tools and techniques, double RJ45 sockets maintain signal integrity and minimize insertion loss, making them fully capable of handling modern high-speed applications such as video conferencing, cloud computing, 4K streaming, and real-time data processing.