ASI120MC and ASI120MC-S - how to tell the difference

I've got both the original and usb3 versions of the ASI120MC

There are no markings on them to tell me which is which

Is there another way of determining which is USB3?

Thanks

David

you can tell from the USB port

USB3.0 port is blue inside but 2.0 port is blank inside

Sam wrote:
you can tell from the USB port

USB3.0 port is blue inside but 2.0 port is blank inside

Thanks Sam - both the ports on my camera are white so I must have 2 usb2 cameras instead of the usb 3 that I ordered

Thanks for your help

David