Linksys PowerLine USB Adapter

The PowerLine USB Adapter lets you turn the existing power lines in your home or office into a high-speed network. Now you do not have to drill through the walls, and climb through the attic or cellar to install network cables, just use the wires that already run through the building.
Product Name: PLUSB10 PowerLine USB Adapter
Product Type: PowerLine Network Adapter
Data Transfer Rate: 14 Mbps PowerLine
Interfaces/Ports: 1 x HomePlug 1.0 PowerLine
Dimensions: 1.3" Height x 6.5" Width x 3.8" Depth
Weight (Approximate): 0.7 lb , 11.20 oz