Lenovo ThinkPad R61E 7650 15.4-inch Laptop (1.86 GHz Intel Celeron Processor, 512 MB RAM, 80 GB Hard Drive, XP Pro) Intel Celeron M 540 1.86GHz Processor 512MB RAM, 80GB 5400rpm HD 15.4in 1280x800 LCD, Intel X3100, CDRW/DVD Combo Drive 802.11bg WiFi, Modem, 1Gb Ethernet, Secure chip 6 cell Li-Ion Battery, Windows XP Professional