Chapter 2 Configuring and Upgrading the System
6.
Disconnect cables.
7.
Remove the air duct.
8.
Open the levers attached on both sides of the socket of the DIMM to be removed.
It will be unlocked and the DIMM can be removed.
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Express5800/R320c-E4, R320c-M4 Maintenance Guide (VMware)
5. Installing Optional Devices
Air duct