4Hold the memory module by its notches and remove it from the slot.
5 Remove the other memory module.
Important: Hold the memory modules by their edges, and do not touch the gold connectors.
6Insert the new memory module in the slot:
a Align the notch on the gold edge of the module with the notch in the lower memory slot.
b Tilt the card and push the memory into the slot.
c Use two fingers with firm, even pressure to push down on the memory module. You should hear a click when the memory is inserted correctly.
d Repeat to install an additional memory module in the top slot. Press down on the module to make sure it is level.