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1. Here KP-810-18VR
2 User manual. HOW TO USE "Insert USB RECEIVER into USB port in the computer, system will find new
hardware "wireless Audio HID Device" and will install driver automatically,
Turn unit on after driver installation successfully by switching power button
to on, LED and will flash one time then go out. That means your
keyboard and computer have been built connection. "
3 Connect the USB-transmitter
4 see HID-device.
5 drivers are installed
6 Claim : The keyboard does not work
I ordered KP-810-18V, but received KP-810-18VR