TP-LINK TL-WN422G Wireless USB Adapter

Plugged this device in my workstation, clicked the network manager application, selected my AP and it connected instantly on Ubuntu. Windows may harder but this looks like an easy alternative to running wires around the house.

You can pull the cap off the top and connect with the USB extension cable supplied.  A small strip of double sided tape would enable mounting to a wall or window for better connections.

The 4dbi antenna is removable and can be replaced with a 10dbi panel with an RPSMA connector.

Not available at WalMart. Contact LSNet for professional installation and ongoing support