HP EliteBook 2540p 12.1" Core i7-640LM 2.13GHz 160GB 4GB DVD+/-RW WINDOWS 7 PRO Processor: Intel Core i7-640LM Processor (2.13 GHz, 4 MB L3 cache) Up to 2.93 GHz with Intel Turbo Boost Technology; Memory: 4GB DDR3 Installed; Hard Drive: 160GB SATA Operating System: Windows 7 Professional 64-Bit Installed and Activated with COA (Certificate Of Authenticity) and Recovery Partition; Optical Storage: CD/DVD+/-RW DL SuperMulti Drive; Primary Battery: 6 cell, 62 WH, 2.8 AH, Li-ion battery Graphics: Intel HD Graphics; Display: 12.1-inch diagonal LED-backlit WXGA anti-glare (1280 x 800) Ambient Light Sensor; Optional 2 MP webcam Audio: HD audio (HP Premier Sound) Integrated dual-microphone array Integrated speakers Touch-sensitive controls for volume up, volume down, and mute; Communication: Integrated Intel Gigabit Ethernet (10/100/1000 NIC) 56K V.92 modem; Wireless: Intel Centrino Advanced N 6200 HP un2420 EVDO/HSPA Mobile Broadband Module Bluetooth I/O Ports: 1 ExpressCard/34 slot, 1 Smart Card Reader, External monitor: Two - (1) DisplayPort, (1) VGA, 1 Secure Digital slot, 1 1394a, 1 Combo headphone/microphone jack, 1 Power connector, 1 RJ-11/modem, 1 RJ-45/Ethernet, 3 USB 2.0 (including one powered), Docking Connector For HP 2540 Docking Station