Archives Categories Blogroll Posted on 16 June 2026 in TIL , Gadgets Back in April , I upgraded my home LAN to 10Gb/s. The in-wall cabling is CAT-6 or similar, so I had to use 10GBASE-T. Now, the router I'm using, and the switch in my study, provide 10Gb/s through SFP+ cages; that meant that they needed 10GBASE-T SFP+ modules in order to connect. That kind of module is known to run hot -- sometimes too hot to actually work. The modules in reggie , the router, appeared to be running OK (see the linked post above for charts), but the one in nigel , the study switch, was a worrying 93C. I tried sticking some mini-heatsinks on it , which seemed to help a bit. But the weather got warmer, and eventually the module overheated.…