I’ve bought plenty of upgrades for my home lab over the years, and these range from handy PCIe cards and extra memory (before the RAM apocalypse) for my primary workstation to spare nodes and remote backup hubs. That said, network devices have easily been some of the most expensive upgrades out of all my paraphernalia, even though my descent into the networking rabbit hole didn’t cost me a lot of money in the beginning. Both my PC and NAS already supported 2.5G functionality, so all I had to do was buy a switch capable of these speeds.