Where is USB button on SDS200 ?

[KG5KS]

Bought a used SDS 200 scanner. Downloaded the manual, and software. When I connect the scanner via usb connector and turn the scanner on. Tells me to hit the usb button , looked at the manual and couldn't find it. Any suggestions or help is greatly appreciated.

Thank you
KT

 

[buddrousa]

It is the Y/YES Button
BELOW THE 9 and ABOVE THE CHANNEL Button

 

[KG5KS]

Ty