Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 71)

4. Align the memory module's edge connector with the alignment keys, and insert the memory module in the connector
(see Figure 7-3 ).
The memory module connector has two alignment keys that allow the memory module to be installed in the connector
in only one way.
NOTE: The RAID controller memory module must be an unbuffered memory module, rated to run at 100 MHz or
faster. Do not substitute registered memory modules such as those used for system memory.
5. Press on the memory module with your thumbs while pulling up on the ejectors with your index fingers to lock the
memory module into the connector.
Figure 7-3. Installing the RAID Controller Memory Module
6. Push the ejectors on the RAID hardware key connector down and outward to allow the key to be inserted into the
connector (see Figure 7-4 ).
7. Insert the RAID hardware key into its connector on the system board and secure the key with the latches on each end
of the connector (see Figure 7-4 ).
See Figure A-3 to locate the RAID hardware key on the system board.
8. Press on the hardware key with your thumbs while pulling up on the ejectors with your index fingers to lock the
hardware key into the connector.
Figure 7-4. Installing the RAID Hardware Key