Sony MSAC-USM1 Mode D'emploi page 15

Connecting this unit to your computer
Connect the USB jack on this unit to a USB jack on your computer using
the special USB cable supplied.
On the special USB cable
A connector: This is plugged into the USB jack on the computer. Any of
Mini-B connector: This is plugged into the USB jack on this unit.
Downloaded from:
USB jack
A connector
the jacks can be used if the computer is provided with
multiple USB jacks.
https://www.usersmanualguide.com/
USB jack
Mini-B
connector
Access lamp
15-US