If I am not wrong that is an USB connector on Sony.
Yup, it uses a microusb connector, but Sony's 'MULTI' port has 10 additional contacts/pins that are added by Sony, to pass on more information compared to a standard microusb port. Stuff like shutter, zoom control. If you plug this remote into a normal microusb port (that's designed only for charging/data transfer, for example), it won't work the same way cos those additional contacts don't exist.
http://www.dpreview.com/forums/thread/3551161