The COM/TAB switch isn't absent, it's RECESSED
Joe911 on 2015/06/16
The 'issue' with the Roland was that there is a COMputer/TABlet switch on the side of it to differentiate between whether it is connected to a computer or tablet respectively. The problem I had was that I couldn't effect the switch with a thumb pressure. I contacted Roland UK, and was advised that the switch is recessed below the surface and that a small tool would be necessary to effect a switching. I used a plastic coated paperclip, and that exercise was then successful. They also advised that the switch is recessed to prevent accidental resetting e.g. during a gig.