Dell Latitude E5550 15.6" HD (1366x768) Wide View Anti-Glare WLED-backlit. 5th gen Intel Core i5-5300U Processor (2.3GHz, 3M cache). Windows 7 Professional English 64bit (Includes Windows 8.1 Pro license and media). 4GB (1x4GB) 1600MHz DDR3L Memory. 500GB 2.5inch Serial ATA (7,200 Rpm) Hard Drive. Intel Integrated HD Graphics 4400. DDPE Personal Edition License + ProSupport for Software 3 Year. Intel Dual Band Wireless-AC 7265 802.11AC Wi-Fi + BT 4.0 LE Wireless Card (2X2). Internal Dual Pointing Keyboard, English. 65W A/C Adapter, 3-pin. Universal Jack SD 4.0 Memory card reader Optional Edocking connector, 3 USB 3.0 (one with PowerShare), HDMI, VGA Network connector (RJ-45), SIM card slot optional Two M.2 Expansion slots: 1 WWAN/HCA and 1 WLAN/BT/WiGig Optional SmartCard Reader and optional Fingerprint Reader Lock slot. HD Video Webcam / Dual Array Microphone with Waves Noise Cancelling Software. 38 Whr (3 Cell) Lithium Polymer battery with ExpressCharge.