color=#000000 size=2>HP recommends Microsoft? Windows? XP Professional Intel? 855GM chipset with 400MHz processor side bus 8 cell lithium ion battery 65 watt power adapter Touchpad 1.38 inches thin and 5.75lbs 15-inch display One MultiBay drive Integrated Intel? Extreme Graphics 2 Interfaces: Two type I/II or one type III PC card slots, one external monitor, one microphone in, one headphone in/line out, RJ-11 (modem), RJ-45 (NIC), infrared port, one enhanced parallel EPP/ECP, one serial, one S-video out, 2 USB 2.0, docking connector, IEEE-1394