PPK2 doesn‘t work

[helen]

Excuse me：

                    PPK2 doesn‘t work，I don't know why，The computer does not recognize the usb port after connecting the USB cable，The indicator light of ppk2 is not on.What should I do?

[tktf]

Hey Helen,

Maybe a stupid question - but did you remember to turn on the PPK2? Because what you described is normal if you have not moved the switch (at top center of the PPK2) to the ON position after plugging it in to the USB.