This system comes standard with non-ECC (KVR24S17S6/4), but also supports ECC (KSM24SED8/16ME). When mixing ECC and non-ECC modules, the system will not perform the ECC function.
Faster memory will clock down to run at optimal speed depending on processor model installed.
Please refer to Synology Compatibility List web page to find a suitable data storage drive (HDD/SSD) for this system / NAS.