910/2910/3910: 2 x USB-A. 5V Output = 1 x 2.1A & 1 x 1A. The plate is made from brass which is then brushed and lacquered. Part of the G&H Flat Plate range. The plate is 1 mm thick. To avoid installation problems and to achieve a flush fitting all wall boxes should be countersunk slightly into the wall.