1. Introduction
This manual provides detailed instructions for the assembly, setup, operation, and maintenance of your KXRORS Feker IK75 Pro 3-Mode 75% Gasket RGB Backlit Mechanical Keyboard Kit. Please read this manual thoroughly before use to ensure proper functionality and longevity of your keyboard.

Image: The KXRORS Feker IK75 Pro mechanical keyboard kit, showcasing its barebones structure with RGB lighting visible through the switch sockets.
2. Package Contents
Verify that all components are present in your package:
- Feker IK75 Pro Keyboard Kit (Barebones)
- USB-C Cable
- Keycap Puller
- Switch Puller (if included, not explicitly listed but common for kits)
- User Manual (this document)
Note: Switches and keycaps are not included with the barebones kit and must be purchased separately.

Image: Overview of the Feker IK75 Keyboard DIY Kit highlighting key features such as 2.4GHz wireless, Type-C connectivity, USB-C, mute cotton, 8000mAh battery, gasket mount, programmability, and Bluetooth.
3. Product Overview
The Feker IK75 Pro is a 75% layout mechanical keyboard kit designed for customization. It features a gasket-mounted structure for improved typing feel and sound, multi-mode connectivity, and per-key RGB lighting.
Key Features:
- 75% Layout: Compact design with dedicated function row and arrow keys.
- 3-Mode Connectivity: Supports Wired (USB-C), 2.4GHz Wireless, and Bluetooth connections.
- Gasket Mount: Provides a flexible and cushioned typing experience.
- Hot-Swappable Sockets: Compatible with 3-pin and 5-pin mechanical switches, allowing for easy switch changes without soldering.
- RGB Backlighting: Customizable per-key RGB lighting effects.
- Volume Knob: Multi-function rotary knob for volume control and other media functions.

Image: Diagram illustrating the three connectivity modes: Wired (USB-C), 2.4G Wireless (via USB dongle), and Bluetooth, showing compatibility with laptops, tablets, and smartphones.

Image: Close-up of the multi-function volume knob, indicating its use for volume adjustment and other controls.

Image: Exploded diagram showing the internal layers of the keyboard kit, including the upper cover, silicone gasket, position board, mute cotton, PCB, switch base foam, case foam, silicone gasket, and bottom cover.
4. Setup and Assembly
The Feker IK75 Pro is a barebones kit, requiring the installation of switches and keycaps.
4.1. Installing Switches
- Ensure the keyboard is disconnected from power.
- Align the pins of your mechanical switch with the hot-swappable socket on the PCB.
- Gently push the switch straight down until it clicks into place. Do not force the switch, as this may bend the pins. If resistance is met, remove the switch, straighten the pins, and try again.
- Repeat for all desired switch positions.
4.2. Installing Keycaps
- Align the cross-stem of the keycap with the stem of the installed switch.
- Press the keycap firmly onto the switch until it is securely seated.
- Repeat for all keycaps.
4.3. Initial Connection
After assembly, connect the keyboard to your computer using the provided USB-C cable. The keyboard will automatically detect the connection and begin charging its internal battery.
5. Operating Instructions
5.1. Connectivity Modes
The Feker IK75 Pro supports three connection modes, selectable via a switch on the keyboard's rear or side:
- Wired Mode: Connect the USB-C cable from the keyboard to your computer. This mode also charges the keyboard.
- 2.4GHz Wireless Mode: Insert the 2.4GHz USB dongle into an available USB port on your computer. Switch the keyboard to 2.4G mode. The keyboard should automatically pair.
- Bluetooth Mode: Switch the keyboard to Bluetooth mode. The keyboard will enter pairing mode (indicated by a flashing LED). On your device, search for "Feker IK75 Pro" and connect. The keyboard supports multiple Bluetooth profiles (e.g., BT1, BT2, BT3) for connecting to different devices. Refer to the specific key combinations for switching between profiles (often Fn + 1/2/3).
5.2. RGB Lighting Control
The keyboard features customizable RGB backlighting. Specific key combinations (often involving the Fn key) are used to cycle through lighting effects, adjust brightness, and change colors.
- Fn + \|: Cycle through lighting effects.
- Fn + ↑/↓: Adjust brightness.
- Fn + ←/→: Adjust effect speed/direction.
- Fn + Del: Change lighting color (for static modes).

Image: Close-up view of the keyboard's RGB lighting, showcasing vibrant and customizable illumination through the switch sockets.
5.3. Volume Knob Functionality
The rotary knob typically controls system volume. Rotate clockwise to increase volume, counter-clockwise to decrease. Pressing the knob usually mutes/unmutes audio.
5.4. Software Customization
For advanced customization of key assignments, macros, and lighting effects, download the official Feker software from the manufacturer's website. Ensure you download the correct version for the IK75 Pro model.
6. Maintenance
Regular maintenance helps prolong the life and performance of your keyboard.
- Cleaning: Use a soft brush or compressed air to remove dust and debris from between keycaps. For deeper cleaning, remove keycaps using the provided keycap puller and wipe the surface with a slightly damp, lint-free cloth. Avoid excessive moisture.
- Battery Care: To maximize battery life, avoid fully discharging the keyboard frequently. Charge the keyboard when the low battery indicator appears.
- Storage: When not in use for extended periods, store the keyboard in a dry, cool place away from direct sunlight.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Keyboard not responding (Wired) | Loose cable connection; Faulty USB port; Driver issue. | Ensure USB-C cable is securely connected. Try a different USB port or cable. Restart your computer. |
| Keyboard not responding (Wireless/Bluetooth) | Low battery; Incorrect mode selected; Pairing issue; Dongle not recognized. | Charge the keyboard. Ensure the correct mode (2.4G/BT) is selected. Re-pair the keyboard with your device. Try the dongle in a different USB port. |
| RGB lighting not working or flickering | Software glitch; Loose connection; Hardware fault. | Restart the keyboard. Check for software updates. If persistent, contact support. |
| Keys not registering | Switch not fully seated; Faulty switch; Bent switch pin. | Remove the keycap and switch. Inspect switch pins for bends and straighten if necessary. Reinsert the switch firmly. Try a different switch in the same socket to test the socket. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | Feker IK75 Pro |
| Layout | 75% (83 Keys) |
| Connectivity | Wired (USB-C), 2.4GHz Wireless, Bluetooth |
| Hot-Swappable | Yes (3-pin/5-pin switches) |
| Backlighting | RGB |
| Battery Capacity | 8000 mAh |
| Material | Stainless Steel, Plastic, Acrylonitrile Butadiene Styrene |
| Item Weight | 2.68 pounds |
| Package Dimensions | 15.63 x 7.09 x 2.2 inches |
9. Warranty and Support
For warranty information and technical support, please refer to the official KXRORS or Feker website, or contact your retailer. Keep your purchase receipt as proof of purchase.
Manufacturer: Feker
Brand: KXRORS
Contact: Refer to the KXRORS store page on Amazon for potential contact information or support links: KXRORS Store