USB-A is the type of connector which plugs into your laptop. USB-B is the end that plugs into your printer. High quality braided shield and ferrite core connector at both ends to shield against EMF and RF interference. *10m+ models have an in-line active booster (48 mm / 1.9? long x 25 mm / 0.98? wide) integrated half way along cable. When used with Vision’s Techconnect modular faceplate, we recommend using the TC2 USB+ active booster module with all cables longer than 5m (16.4 ft).