• Memory modules of different sizes can be mixed (for example, 2 GB and 4 GB). But, all populated
channels must have identical configurations.
• Memory modules must be installed beginning with the first socket.
NOTE: The memory sockets in your computer may be labeled differently depending on the
hardware configuration. For example, A1, A2 or 1,2,3.
• If the quad-rank memory modules are mixed with single or dual-rank modules, the quad-rank
modules must be installed in the sockets with the white release levers.
• If memory modules with different speeds are installed, they operate at the speed of the slowest
installed memory modules.
Removing the Memory
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the cover.
3. Press down on the memory retaining tabs on each side of the memory modules, and lift the memory
modules out of the connectors on the system board.
Installing the Memory
1. Align the notch on the memory-card with the tab in the system-board connector.
2. Press down on the memory module until the release tabs spring back to secure them in place.
3. Install the cover.
4. Follow the procedures in After Working Inside Your Computer.
Removing the Coin-Cell Battery
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove:
a. cover
b. expansion card(s)
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