I forgot to mention, I did a test using a couple of powerline adaptors* to exclude the cable itself from the equation. The switch still reported a mismatch error... but on an entirely different port/cable
*powerline adaptors have their place, no doubt about it, but I have my reservations. I used them to start with (before cabling) and they worked but I would always cable if at all possible. I've no proof but my gut tells me there must be some form of interference.
*powerline adaptors have their place, no doubt about it, but I have my reservations. I used them to start with (before cabling) and they worked but I would always cable if at all possible. I've no proof but my gut tells me there must be some form of interference.