Dell OptiPlex 7020 (Mid 2014) - Manual (Page 19)

3. Disconnect the speaker cable from the system board and release it from the securing tab inside the
chassis. Press the speaker-securing tab, and slide the speaker towards the right of the computer to
release it.
Installing the Speaker
1. Place the speaker at the appropriate location on the chassis.
2. Press the speaker-securing tab and slide the speaker towards the left of the computer to secure it.
3. Guide the speaker cable through the securing tab and connect the speaker cable to the system
board.
4. Install the:
a. drive cage
b. optical drive
c. cover
5. Follow the procedures in After Working Inside Your Computer.
Memory Module Guidelines
To ensure optimal performance of your computer, observe the following general guidelines when
configuring your system memory:
• 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.
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