I'm looking at a HP NC365T to mess around with pfsense. Ive done some googling and heard it works good with pfsense but I keep seeing it refered to as a "server adapter", does this mean it wouldnt fit in a normal, modern-ish computer case?
Yea, it’s just a PCI Intel based quad NIC. Assuming it comes with a full size PCI bracket and not a half height, it’ll fit just like any other pci card would.
Just a word of advice, for pfsense, only use one port for WAN and one for LAN. Don’t expect to use all 4 ports on your NIC, go from LAN to a switch. Pfsense isn’t meant to be used as a switch (you can, but…. Just don’t), thus just use 1 port for WAN and 1 for LAN.