Select a profile slot by pressing and holding , FN + W , or FN + E for three to five seconds.

: Some RK models, particularly those with a physical "ON/B" switch, can be put into pairing mode by long-pressing Fn+Q (or Fn+W / Fn+E ) for 3 seconds until the chosen letter key flashes rapidly. If Fn+P isn't working, give this method a try.

Once connected, the RK908 offers several customization options to enhance your experience.