User's Manual

14
Chapter 2: Hardware Setup
Install Memory Modules
Genuine Synology memory modules must be installed to ensure system compatibility and reliability. Failure
to follow the congurations below for the suggested installation sequence of di󰀨erent memory capacities may
prevent the system from booting successfully, and could impair system performance and stability.
A0 A1 B0 B1 Total Memory
16GB - - - 16GB
16GB - 16GB - 32GB
16GB 16GB 16GB - 48GB
16GB 16GB 16GB 16GB 64GB
Note:
It is required to use identical memory modules of the same capacity and frequency.
Follow the steps below to install, check, or remove a memory module on your RS4021xs+.
To install the RAM module
1
Shut down your RS4021xs+. Disconnect all cables connected to your RS4021xs+ to prevent any possible
damage.
2
Remove the screw on the back of you RS4021xs+. Slide open the rear top cover, then lift it up and put it aside.
Note:
When you remove the rear top cover, sensitive internal components are exposed. Avoid touching
anything other than the memory assembly when removing or adding memory.