While PoE is nice, I suspect most of those wall-warts output something like 9V or perhaps even 5V. If there are matching wall-warts, a small switching power supply of the same voltage (and combined current) would be a clean replacement.
The point about a UPS is a good one though. There is certainly an efficiency loss to step up to 110V, step back down to 5V.
Having fitted out an RV though, it was nice to find lots of 12V appliances — they could be run into a small 12V fuse block and the fuse block wired directly to a 12V "house" battery.
The point about a UPS is a good one though. There is certainly an efficiency loss to step up to 110V, step back down to 5V.
Having fitted out an RV though, it was nice to find lots of 12V appliances — they could be run into a small 12V fuse block and the fuse block wired directly to a 12V "house" battery.