Hardware Options and Upgrades To insert a memory module: a. Align the keyed (notched) edge of the module with the keyed area in the memory slot 1 . b. With the module at a 45-degree angle from the surface of the memory compartment, press the module into the memory slot until it is seated 2 . c. Push the module downward until the retention clips snap into place 3 . Inserting a memory module Startup and Reference Guide—Part 2 8–13