If you have a PCI-e slot, there are reasonably priced, passively cooled NICs. Here's an RJ45 one: https://www.bhphotovideo.com/c/product/1344847-REG/asus_90ig04

If you have a PCI-e slot, there are reasonably priced, passively cooled NICs. Here's an RJ45 one: https://www.bhphotovideo.com/c/product/1344847-REG/asus_90ig0440_ma0r00_xg_c100c_10g_network.html?ap=y&smp=y https://www.bhphotovideo.com/c/product/1344847-REG/asus_90ig... There are a few quiet 10 GbE switches, the passive Mikrotik ones others are mentioning, but this one is a quiet actively cooled one if you want RJ45: https://www.qnap.com/en-us/product/qsw-1208-8c https://www.qnap.com/en-us/product/qsw-1208-8c (Lots of combo RJ45/SFP+ ports)