Rk908 Bluetooth Keyboard Manual Hot ◎ (TOP)

: The light will stop flashing and stay solid once paired. ⚡ 2.4G & Wired Mode

Use this mode for charging or if you require zero latency for competitive gaming.

If the keys are acting erratically, try holding Fn + Spacebar for several seconds to reset the keyboard to its default settings.

Short press Fn + 1, 2, or 3 to swap instantly.

The manual begins with the physical inspection of the package. Inside, users find the RK908 keyboard, a USB-C charging cable, a 2.4GHz wireless dongle (on some versions), a keycap puller, and a quick-start guide. The first instruction is to charge the keyboard fully for at least 2–3 hours using the USB-C port. A flashing red LED indicates low battery, while a steady green light (or off) signals a full charge. The manual warns against using fast chargers above 5V/1A to avoid damaging the battery controller.

The manual notes that up to three Bluetooth devices can be paired simultaneously (using Fn+Q, W, E). Switching between them is instantaneous by tapping the respective key combination.

| Hotkey | Function | | :--- | :--- | | | Switch between Windows (Q), Mac (W), or iOS/Android (E) layout | | Fn + 1/2/3 | Switch Bluetooth device channel | | Fn + 4 | Enter 2.4GHz mode (if you have the dongle version) | | Fn + Spacebar | Check remaining battery (Press once; lights flash 1-4 times) |