Type-B to Type-C adapter
A USB Type-B plug on one end and a USB Type-C socket on the other. This converts a port rather than carrying a signal any distance, so it is usually a stubby dongle rather than a cable.
USB Type-B — plug
The chunky near-square plug on the back of a printer.
How to recognise it
- Almost square, with the two top corners cut off at an angle.
- About 8 mm across - noticeably deeper than a Type-A.
- Usually white or light grey plastic inside.
- Maximum speed:
- 480 Mbps (Hi-Speed)
- Maximum power:
- 2.5 W standard
USB Type-C — socket
The small oval that goes in either way up - and hides the most variation.
How to recognise it
- Rounded oval about 8.4 mm wide, symmetrical top to bottom.
- Reversible: there is no wrong way up.
- A flat tongue with contacts on both faces sits inside the socket.
- Maximum speed:
- 480 Mbps to 80 Gbps, depending entirely on the cable
- Maximum power:
- Up to 240 W with USB PD 3.1 and an e-marked cable