IBM ThinkPad T40 - Bottom View

Bottom view
1 Hard disk drive
2 Optional DIMM slot
3 Battery pack
4 Battery pack lock (only for 14.1-in LCD models)
5 Docking connector
6 Battery pack latch
7 Infrared port
8 Built-in stereo speakers
9 LCD latch
3
4
7
9
1
2
5
6
8
Locations
ThinkPad T40/T40p, T41/T41p, T42/T42p Series 189