USB socket identification

Apr 3, 2022
I have a Mikomi Digital Voice Recorder (Model ET858). It came with a cable to connect it to my computer but I've lost that cable (presumed thrown out) so I'm try to get a replacement. However, I don't recognise the socket on the device so I'd like some help identifying what it is in order to buy the right cable. Web searches for the device have not turned up any useful information.

Here's a picture of the socket:

The original cable had a USB A plug on the other end (to connect to the computer) and the device just appeared as a normal mass storage device.

Any ideas what cable I need?