Lenovo ThinkPad T400s 2808 Hardware Maintenance Manual page 98

Table 12. Removal steps of DIMM (continued)
90
ThinkPad T400s, T410s, and T410si Hardware Maintenance Manual
Note: For ThinkPad T400s, if only one DIMM is used on the computer you are
servicing, the card must be installed in SLOT-0 ( a ), but not in SLOT-1 ( b ).
For ThinkPad T400s:
b a 3
3
4