Synology NAS RS1221RP+ Hardware Installation Manual page 15

4 Insert the new memory module into the empty slot:
a Align the small gap between the gold connectors of the memory module with the notch on the empty slot.
Insert the memory module into the slot. Make sure that the module is properly inserted.
b Gently push down the memory module until you hear a click.
a
b
c
Note:
• Hold the memory module by its edges and avoid touching the gold connectors.
• Synology will not provide full product warranty or technical support if a non-Synology memory module is
used for memory upgrade.
5 Place the top cover back and fasten the screws that removed in step 2.
6 Reconnect the cables removed in step 1, then press the power button to turn on your Synology NAS.
To make sure Synology NAS recognizes the new memory capacity
1 Install DiskStation Manager (DSM). Please see "Install DSM on Synology NAS" for more information.
2 Sign in to DSM as admin or a user belonging to the administrators group.
3 Go to Control Panel
If your Synology NAS does not recognize the memory or does not start up successfully, please make sure that
the memory module is installed correctly.
15 Chapter 2: Hardware Setup
> Info Center and check Total Physical Memory.