The Encore Wireless N150 PCI-E Adapter is a unit that provides wireless connectivity to a computer through a PCI Express x1 port. It has a maximum downstream data rate of 150 Mbps and comes with an external detachable antenna. The interface card type is Ethernet/Network Cards, and it is compatible with PCI-E x1 ports. This item is brand new, unopened in the original packaging. Please see the pictures for further details.