I didn’t have a lot of time this evening, but took a monitor, keyboard and mouse down to the warm room, connected them and one of the pier computers up to the KVM switch and powered everything on.
All the hardware seems to work fine, despite the length (5m, from memory) of the HDMI and USB cables. I even managed to pick up a wifi signal from the house, but it wasn’t stable enough to use for any length of time. I think I was averaging about 10Mb/s over the wifi link, dropping down to 1Mb/s at times. It was like being in the 1980s 😀