Lenovo ThinkPad T520 User Manual page 163

6. Find the notch on the contact edge side of the SO-DIMM you are installing.
Attention: To avoid damaging the SO-DIMM, do not touch its contact edge.
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 in firmly. Pivot the SO-DIMM downward
(2) until it snaps into place.
Note: Be sure to install the new memory module in the slot where the old one was originally installed.
7. Make sure that the SO-DIMM is firmly fixed in the slot and cannot be moved easily.
8. Put the memory slot cover back in place (1), close the cover (2), and tighten the two screws (3).
9. Put the battery back in place (for more details, refer to "Replacing the battery" on page 119), turn the
computer over again, and reconnect the cables.
Replacing memory in the slot under the keyboard
.
Chapter 6 Replacing devices
145