I assume it is a PCI Express 2.0 x1 card which means it has 500 MB/s bandwidth each way. Gigabit NIC's maximum is 125 MB/s so there's more than enough left over to run an audio card. I wish more low-bandwidth cards would add more features like NICs in order to consume fewer motherboard slots. ITX and other SFF platforms are growing in popularty and they often only have one PCI Express slot. I think I would rather perfer dedicated sound cards (not just HDMI pass thru) built into graphics cards the most.