I have been trying to find a Wireless-N NIC that can run in the 5GHz but the closest I have seen is some USB2 adapter. There this PC at home in a corner where there is no access to ports. I ran a cable to it but the wife doesn't approve.

The DGL4500 is running N only and at 5GHz (my neighborhood is crowded with G's). I have found plenty of 2.4GHz N adapters but no 5GHz PCI or PCI-e ones.
Any suggestions? Thanks in advance!