Mainstream performance and featuresThinkPad® R Series are affordable and lightweight notebooks with great performance, outstanding battery life and large, bright displays. Select models are Microsoft® Windows Vista" Capable with Intel® Core"2 Duo processors and feature new ThinkPad 11n Multiple Input/Multiple Output (MIMO) wireless technology that delivers greater levels of mobile performance, reliability, and manageabilty. Performance featuresThe R Series offers large, bright XGA or SXGA+ TFT displays  up to 15"  and are perfect for viewing presentations and demanding applications. R Series models offer impressive features, including: Intel® Centrino® Duo mobile technology (select models) Available with Microsoft® Windows® XP Professional and Windows Vista" Capable Intel® Core"2 Duo processor (select models) Intel 945GM, 945PM, 940GML or 915GM Express Chipset ExpressCard slot, Cardbus Plus slot and 1394 (select models)