Lenovo 7417 Service Guide - Page 60

If you install a memory module in only one of the two memory

Page 60 highlights

8. With the notched end of the SO-DIMM toward the contact edge side of the socket, insert the SO-DIMM into the socket at an angle of about 20 degrees 1 ; then press it firmly 2 . Note: If you install a memory module in only one of the two memory slots, install it in the lower slot. 2 1 2 1 9. Pivot the SO-DIMM downward until it snaps into place. 10. Make sure that the card is firmly fixed in the slot and does not move easily. 52 ThinkPad® T400 and R400 Service and Troubleshooting Guide

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8.
With the notched end of the SO-DIMM toward the contact edge side of
the socket, insert the SO-DIMM into the socket at an angle of about 20
degrees
±1²
; then press it firmly
±2²
.
Note:
If you install a memory module in only one of the two memory
slots, install it in the lower slot.
1
2
2
1
9.
Pivot the SO-DIMM downward until it snaps into place.
10.
Make sure that the card is firmly fixed in the slot and does not move
easily.
52
ThinkPad
®
T400 and R400 Service and Troubleshooting Guide