User's Manual
Table Of Contents
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 congurations below for the suggested installation sequence of dierent 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.