Table 7. Specifications (continued)
Feature Description
Media slot v One ExpressCard slot and 7-in-1 Media Card Reader slot

v One ExpressCard slot and one PC Card (Type-II) slot

v One ExpressCard slot and one Smart Card slot

Bluetooth wireless (some

models)

v ThinkPad Bluetooth with Enhanced Data Rate (BDC-2.1)

Modem v ThinkPad Modem (MDC-3.0, 56 kbps HDA) or Internal
modem
Touch pad v UltraNav®
ThinkLight® Yes
Battery v Li-ion battery (4 cells) 2.6 Ah

v Li-ion battery (6 cells) 2.6 Ah

v Li-ion battery (9 cells) 2.6 Ah

AC adapter v 65-watt type

v 90-watt type

Preinstalled operating
system

v Windows XP Professional

v Windows Vista® Starter Edition (32 bit)

v Windows Vista Home Basic (32 bit)

v Windows Vista Home Premium (32 bit)

v Windows Vista Business (32 bit)

v Windows Vista Business (64 bit)

v Windows Vista Ultimate (32 bit)

50 ThinkPad T400 and R400Hardware Maintenance Manual