Your physical manual may be lost, but here is the exact sequence to pair the RK908:
If the official link changes, you can find user-uploaded copies on Manualslib.com or Manuals.plus by searching “RK908 manual.” Be sure the PDF includes Bluetooth pairing instructions (Fn + P / Fn + Q/W/E), backlight shortcuts, and battery care tips. rk908 bluetooth keyboard manual link
: A space-saving 87 or 88-key compact design (Tenkeyless) that helps improve posture by allowing the mouse to be closer to the user. Backlighting Your physical manual may be lost, but here
: Short press Fn + Q , W , or E to select a "channel" (you can remember three different devices). : You can check for updated manual uploads
: You can check for updated manual uploads at the Rii Manual Download Center .
Hold for 3 seconds; the key light will blink rapidly to enter pairing mode. Switch Devices FN + Q, W, or E (Short Press)
: Switch the power button on the bottom of the keyboard to the ON position.