1. Introduction
The Dareu EK75 is a versatile custom mechanical keyboard designed for gaming, office, and general use. It features tri-mode connectivity (wired, 2.4G wireless, and Bluetooth 5.1), hot-swappable switches, PBT keycaps, RGB backlighting, and a Gasket structure for enhanced typing feel and sound. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your EK75 keyboard.
2. Package Contents
Please check the package for the following items:
- Dareu EK75 Mechanical Keyboard
- USB Type-C Cable
- Keycap Puller / Switch Puller Tool
- User Manual (this document)
- Additional Keycaps (if included with your specific model, e.g., Nine-tail Fox keycaps)
3. Keyboard Layout and Features
The EK75 features an 80-key layout with an additional multi-function knob. Key features include:
- Tri-Mode Connectivity: Seamlessly switch between Wired (USB Type-C), 2.4G Wireless, and Bluetooth 5.1.
- Hot-Swappable Switches: Supports 3-pin and 5-pin mechanical switches, allowing for easy customization without soldering.
- PBT Two-Color Keycaps: Durable keycaps with a dry and delicate touch, resistant to oiling and wear.
- RGB Backlighting: Features bottom-position RGB lighting with 11 different lighting effects.
- Gasket Structure: Provides a pure sound profile and a soft, comfortable typing experience.
- Multi-Function Knob: Controls media playback volume and other system functions.
- Built-in Battery: 4000mAh lithium battery for extended wireless use.

4. Setup Guide
4.1 Initial Charging
Before first use, it is recommended to fully charge the keyboard. Connect the keyboard to a USB power source using the provided USB Type-C cable. The charging indicator (if present) will show the charging status.
4.2 Connectivity Modes
The EK75 supports three connection modes: Wired, 2.4G Wireless, and Bluetooth 5.1. Use the switch on the keyboard to select your desired mode.
4.2.1 Wired Mode
- Ensure the mode switch on the keyboard is set to "Wired" or "USB".
- Connect the USB Type-C cable to the keyboard and the other end to your computer's USB port.
- The keyboard will be automatically recognized by your system.
4.2.2 2.4G Wireless Mode
- Locate the 2.4G USB receiver (usually stored in a compartment on the keyboard).
- Plug the 2.4G USB receiver into an available USB port on your computer.
- Set the mode switch on the keyboard to "2.4G".
- The keyboard should automatically connect to the receiver.
4.2.3 Bluetooth 5.1 Mode
- Set the mode switch on the keyboard to "BT".
- On your computer or device, enable Bluetooth and search for new devices.
- The keyboard should appear as "EK75 BT" (or similar). Select it to pair.
- Follow any on-screen prompts to complete the pairing process.
5. Operating Instructions
5.1 Multi-Function Knob
The knob on the keyboard provides convenient control over media and system functions:
- Rotate Right: Turn up the volume.
- Rotate Left: Turn down the volume.
- Press: Mute/Unmute audio.

5.2 RGB Backlighting
The keyboard features customizable RGB backlighting with 11 different effects. Specific key combinations (e.g., Fn + arrow keys, Fn + Ins/Home/PgUp/PgDn) are typically used to cycle through effects, adjust brightness, and change colors. Refer to the keyboard's quick start guide or software for exact key combinations.
5.3 Software and Customization
For advanced customization, including hardware macro programming and FN layer custom shortcuts, you can download and install the official Dareu software. This software is supported in wired and 2.4G wireless modes.

6. Maintenance
6.1 Cleaning
- Disconnect the keyboard from your computer before cleaning.
- Use a soft, lint-free cloth dampened with a small amount of water or isopropyl alcohol to clean the keycaps and chassis.
- For deeper cleaning, use the provided keycap puller to remove keycaps and clean underneath with compressed air or a small brush.
- Avoid spraying liquids directly onto the keyboard.
6.2 Hot-Swapping Switches
The EK75 supports hot-swappable switches, allowing you to change them without soldering. Use the provided switch puller tool carefully to remove and insert switches. Ensure the new switch pins are aligned correctly before pressing them into the PCB to avoid bending the pins.

6.3 Battery Care
- Avoid exposing the keyboard to extreme temperatures.
- Charge the battery regularly, even if not used frequently, to maintain battery health.
- Do not attempt to replace the battery yourself. Contact support if battery issues arise.
7. Troubleshooting
If you encounter any issues with your Dareu EK75 keyboard, please refer to the following common troubleshooting steps:
- Keyboard not responding:
- Ensure the keyboard is charged.
- Check the connection mode switch (Wired, 2.4G, BT) is set correctly.
- For wired mode, try a different USB port or cable.
- For 2.4G mode, ensure the USB receiver is securely plugged in and try a different USB port.
- For Bluetooth mode, ensure Bluetooth is enabled on your device and re-pair the keyboard.
- Keys not registering or double-typing:
- Remove the keycap and switch for the affected key. Check for any debris or bent pins.
- Try swapping the switch with a known working switch to diagnose if the issue is with the switch or the PCB.
- Ensure the switch is fully seated.
- RGB lighting not working:
- Check if the lighting is turned off or set to minimum brightness via keyboard shortcuts or software.
- Ensure the keyboard is in a mode that supports RGB lighting (some modes might conserve battery by disabling lighting).
- Wireless connectivity issues:
- Ensure there are no strong interferences (e.g., other 2.4G devices, Wi-Fi routers) nearby.
- Move the keyboard closer to the receiver/device.
- Re-pair the keyboard in Bluetooth mode or re-plug the 2.4G receiver.
If the problem persists, please contact Dareu customer support for further assistance.
8. Specifications
| Feature | Detail |
|---|---|
| Brand Name | Dareu |
| Model | EK75 |
| Keyboard Standard | 80 Keys + 1 Knob |
| Operation Style | Mechanical |
| Connectivity Type | Tri-Mode (Wired USB, 2.4G Wireless, Bluetooth 5.1) |
| Interface Type | USB Type-C |
| Switches Hot Swap | Yes (3-pin and 5-pin support) |
| Keycap Material | PBT Two-Color Keycaps |
| Backlight | RGB (11 lighting effects) |
| Battery Capacity | 4000mAh |
| Product Weight | Approx. 706 ± 15g |
| Product Dimensions | 139.7mm x 333mm x 39mm |
| Power Consumption (Wired, no light) | ≤40mA |
| Power Consumption (Wired, brightest backlight) | ≤230mA |
| Power Consumption (Wireless, no light) | ≤35mA |
| Power Consumption (Wireless, brightest backlight) | ≤185mA |
| Application | Desktop, Laptop, Number, Tablet |
| Certification | CE |


9. User Tips
- Experiment with different RGB lighting effects and brightness levels to find your preferred aesthetic.
- Utilize the customization software to program macros for frequently used commands or complex key sequences, enhancing productivity or gaming performance.
- If you experience any input lag in wireless modes, ensure the keyboard is close to the receiver/device and minimize other wireless interference.
- Regularly clean your keycaps and under the switches to prevent dust and debris buildup, which can affect key performance.
10. Warranty and Support
For warranty information and technical support, please refer to the official Dareu website or contact the retailer where you purchased the product. Keep your proof of purchase for warranty claims.
Manufacturer: Dareu
Store: Giraffe Digital Store





