Micro-USB Type-B (SuperSpeed)

A Micro-B with a second block bolted alongside it. Portable drives, mostly.

Also called: USB 3.0 micro B, hard drive cable, wide micro USB.

Micro-USB Type-B (SuperSpeed) plug, face on — Plug (male) - face on

Micro-USB Type-B (SuperSpeed) plug, at an angle — Plug (male) - at an angle

Micro-USB Type-B (SuperSpeed) socket, face on — Socket (female) - face on

Micro-USB Type-B (SuperSpeed) socket, at an angle — Socket (female) - at an angle

How to recognise it

Looks like a Micro-B welded to a smaller extra connector, side by side.
Roughly twice as wide as a plain Micro-B.
A plain Micro-B plug fits the left half of this socket and works at USB 2.0 speed.

Where you will find it

Portable USB 3.0 hard drives and SSDs
Some 2013-2016 era Samsung phones
Drive docks and enclosures

What it fits

A Micro-USB Type-B (SuperSpeed) plug mates only with its own socket. Anything else needs an adapter.