1047 usb to 4 serial adapter products are offered for sale by suppliers on Alibaba.com, of which data cables accounts for 78%, adapters & connectors accounts for 1%, and other computer accessories accounts for 1%.
A wide variety of usb to 4 serial adapter options are available to you, such as short circuit, ovp and over-charging.You can also choose from new, 100% oem compatible usb to 4 serial adapter,as well as from abs, pc fireproof material, and aluminum alloy usb to 4 serial adapter,and whether usb to 4 serial adapter is dc, or ac.