For my server I will use a PIKVM, which is a Raspberry Pi 3/4 used as KVM. Since the Raspberry needs an internet connection, I assembled a pass-through Ethernet port onto the chassis, which will then be connected to the Raspberry:
As this jack is made of metal, it has contact to the chassis, thus it is connected to the ground of the PSU of the server.
Can this be a problem? Would it make sense to isolate it from the chassis (e.g. using 3D printed TPU underlayments), at least in case the Raspberry will get its power from the original Micro-USB power unit?