color=#000000 size=2>HP recommends Microsoft? Windows? XP Professional Intel 915P Express Chipset 12-cell lithium ion battery 180 watt power adapter Full size keyboard with separate numeric keypad As light as 9.3lbs and 1.99 inches thin 17.0-inch WSXGA+ BrightView display ATI Mobility Radeon X600 graphics 128MB Interfaces: One type I/II/ PC card slot, one ExpressCard/54 slot, one external monitor, one microphone in, one headphone in/line out, RJ-11 (modem), RJ-45 (NIC), one S-video out, Four USB 2.0, docking connector, IEEE-1394 (4-pins)