IBM Thinkpad X40 2371GHU Laptop (Intel Pentium M Processor 1.40 GHZ, 512 MB RAM, Windows XP Professional) Battery Chemistry: 	Lithium Ion (Li-Ion), Maximum Battery Run Time: 7.50 Hour Display Screen Type: 	Active Matrix TFT Color LCD Total Number of USB Ports: 2 Graphics Technology: Intel Extreme Graphics 2 Supporting operating sys: Microsoft Windows 2000, Microsoft Windows XP Home Edition, Microsoft Windows NT 4.0