"A" type socket on the rear as found on a laptop chassis "B" type socket on the front as found on a printer chassis Occupies 1 module space USB 3.0 This module is part of Vision's Techconnect connectivity faceplate family. Fixes to Surround Techconnect modules fix into a surround, which in turn fixes to a backbox, mudring (for hollow walls), or a table faceplate. Future-proof If you break a module or need to change it in the future, just replace that part - not the entire faceplate. Flexible Get to site and the client changes what they want on their AV faceplate? No problem. Strong Techconnect parts are robust for the rigours of every day use. They include strengthening ribs and reinforcing where required. Proven For over 15 years Techconnect has improved and developed into one of the most popular AV faceplates in the world.