What is the maximum memory capacity of my Supermicro K1SPE?
The maximum memory size of the K1SPE is 1.5TB / 192GB according to manufacturer.
The phs memory® option for my Supermicro K1SPE is faster than the existing RAM - Is this a problem?
If your system is limited to a slower memory speed, the "Fallback Speed Setting" in the SPD of the phs memory® RAM-Modules ensures the support of slower memory settings down to the given memory speed.
Will the legal warranty of the device expire, if I install a new memory module?
The legal warranty right of your K1SPE will not be affected if you install the memory yourself.