The Crabtree Capital Double Socket with USB (model number 4306/USB/D) offers two USB-A sockets capable of providing a shared 2.1 amps for a total of 10.5 watts power output. It being a variant of the Crabtree Capital Double Socket, most other features remain the same unless stated below.
Of note, the USB sockets are slightly recessed which may pose problems when attempting to use with some cables or devices, depending on plug thickness.
The minimum required back box depth is 35mm.