[exasperaited]

Yes, it's the "multiport" connector; both USB micro-B and wired shutter release socket.

Never quite understood why (considering the A7II, for example, is an Android device!!) they didn't make that port a USB-OTG setup and make the shutter release a proper USB peripheral. But they didn't.

[jacquesm]

Yep. And more annoyingly: the people that sell this stuff don't even realize it, they think it is USB.