EKSA EK3000 Manuel D'utilisation page 6

Set up the keyboard
Slide the operating-system switch to choose the operating system according to your device. (Windows is the factory default system.)
• 2.4 GHz Wireless Mode
1. Slide the connection-mode switch to enable "Wireless Mode".
2. Take the 2.4 GHz USB receiver out of the package box and connect it to your computer.
Note: When switching to a wireless mode, and the 2.4 GHz
USB receiver is plugged in but cannot work properly, you
can press "FN + R" to activate and use it normally.
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