User manual

5. Make sure the memory module sits in properly with the clips in place.

Note: For TS-x53U & TS-451U models, always ensure that a memory module is

installed in the primary slot (red box in the below figure,) or the system will fail to

start. When installing two memory modules, please ensure that they are the same size and

ideally use the same type of RAM for both memory slots. The maximum supported memory

is 8GB combined.