​REV 1044 Code, - In addition to the other features and due to customer requests we have added a Technician Mode, this is where a cue is received solely as a visual and audible cue. The Technician can issue another cue with a Wired button (i2WB) or a standard USB keyboard to action the enabled USB ports. - You do not have to of course, - the choice is yours, but that's the point.