Desktop NIC (network interface card) needs to be able to handle GIG 1000mb/s or 10/100/1000 If it doesn't then you need to go and buy either PCI or PCI-E GIG NIC. On a laptop some new laptops wired connection does handle 10/100/1000. Wireless N at 300mbps can work better with a GIG desktop than with desktop showing only 100.