FEKER K75 Customizable Three-Mode Mechanical Keyboard User Manual
Section I: Key Combination Functions
| Function | WIN System | MAC System |
|---|---|---|
| Fn + ESC | Restore Factory Settings | Restore Factory Settings |
| Fn + F1 | Multimedia | Display Brightness - |
| Fn + F2 | Volume - | Display Brightness + |
| Fn + F3 | Volume + | Tile/Cascade current active windows |
| Fn + F4 | Mute | Enter application main interface |
| Fn + F5 | Previous Track | Previous Track |
| Fn + F6 | Next Track | Next Track |
| Fn + F7 | Play/Pause | Play/Pause |
| Fn + F8 | Stop | Stop |
| Fn + F9 | ||
| Fn + F10 | Web Browser | Web Browser |
| Fn + F11 | My Computer | Volume - |
| Fn + F12 | Calculator | Volume + |
| Fn + U | SCRLK | SCRLK |
| Fn + I | PAUSE | PAUSE |
| Fn + O | INS | INS |
| Fn + Y | PRTSC | PRTSC |
| Fn + L | WIN Lock (On/Off) | WIN Lock (On/Off) |
| Fn + Z | Onboard Layer 1 | Onboard Layer 1 |
| Fn + X | Onboard Layer 2 | Onboard Layer 2 |
| Fn + C | Onboard Layer 3 | Onboard Layer 3 |
| Fn + Spacebar | Battery Level Check (Wireless mode only) | Battery Level Check (Wireless mode only) |
Battery Level Check: In wireless mode, press Fn + Spacebar. The number keys (1-0) will illuminate, indicating battery percentage from 10% to 100% (e.g., one light means 10%).
Section II: Connection Modes and Pairing
This keyboard supports three connection modes: Bluetooth, 2.4G, and Wired.
Bluetooth Mode
Instructions:
- Ensure the power switch is in the ON position (to the right).
- Press and hold Fn + 1, Fn + 2, or Fn + 3 for 3 seconds to enter pairing mode. The corresponding indicator light (1, 2, or 3) will flash rapidly.
- Upon successful connection, the indicator light will remain solid for 3 seconds.
- If pairing fails, the indicator light will turn off, and the keyboard will enter sleep mode.
2.4G Mode
Instructions:
- Ensure the power switch is in the ON position (to the right).
- Press and hold Fn + 4 for 3 seconds to enter 2.4G mode. The indicator light will flash rapidly.
- Insert the 2.4G receiver into your device. The keyboard will automatically pair.
- The keyboard exits pairing mode after 30 seconds. If no device is found, the indicator light turns off, and the keyboard enters sleep mode.
Wired Mode
Instructions:
- Switch the power slider to the OFF position (to the left).
- Connect the keyboard to your device using the provided USB-C cable.
Diagram Description: The back of the keyboard shows a USB-C port and a storage slot for the 2.4G receiver. Connection diagrams illustrate using a USB-C cable, a Bluetooth symbol ⊞, and the keyboard itself.
Section III: Keyboard Lighting Settings
Control your keyboard's backlighting with the following key combinations:
- Fn + \: Cycle through lighting modes.
- Fn + Backspace: Toggle single-color lighting (On/Off).
- Fn + Enter: Turn backlight On/Off.
- Fn + ↑: Increase backlight brightness.
- Fn + ↓: Decrease backlight brightness.
- Fn + ←: Decrease backlight speed.
- Fn + →: Increase backlight speed.
Section IV: Knob Screen Settings
The rotary knob offers intuitive control:
- Default Function: Rotate to adjust volume (+/-). Press to play/pause media.
- Screen Control Mode: Press and hold Fn, then press the knob to enter screen control mode.
The screen can display the following information:
- Standby Screen: Shows current weather temperature and CPU usage. (Diagram 1: Example: "Temp 29°C CPU 06%")
- Connection Mode: Displays the current connection type (Wired, Bluetooth 1/2/3, 2.4G). Bluetooth and 2.4G modes indicate status: Searching, Pairing, Connected. (Diagram 2: Illustrates connection status indicators).
- Keyboard Lighting Control: Allows adjustment of lighting mode, speed, and brightness. (Diagram 3: Shows lighting adjustment options).
- Clock Screensaver: Displays when the keyboard is in sleep mode. (Diagram 4: Shows a clock face).
