DataComm Electronics
The Flat Panel TV Cable Organizer Remodeling Kit comes with everything needed for installation:

Recessed Cable Plate with Power

Single Gang Recessed Cable Plate

Old Work Electrical Box

Single Gang Low Voltage Mounting Bracket

Mounting Screws

Installation Instructions

Note: You will need a sheetrock saw and screwdriver to complete installation.
Flat Panel TV Cable Organizer Remodeling Kit