Lenovo ThinkPad X200 7458 User Manual page 57

Note: If you install a memory module in only one of the two memory
slots, install it in the slot indicated as "SLOT-0".
8. Reinstall the cover of the memory slot by aligning the side of the cover
first 1 , and closing the cover. Then tighten the screws to secure the
cover 2 .
Attention: When you have added or upgraded an SO-DIMM, do not
use your computer until you have closed the memory slot cover. Never
use the computer with the cover open.
9. Reinstall the battery.
10. Turn the computer over, and reconnect the AC adapter and the cables to
the computer.
SLOT-0
2
2
1
Chapter 5. Upgrading and replacing devices
49