DAREU A81 Three Mode Mechanical Keyboard User Manual

1. Introduction

The DAREU A81 is a versatile three-mode mechanical keyboard designed for both gaming and office use. Featuring a streamlined 75% layout with 81 keys, it optimizes desktop space while providing a full range of functionality. This keyboard incorporates an elastic arm GASKET construction for a superior typing feel, hot-swappable switches for customization, and vibrant RGB backlighting.

Figure 1: DAREU A81 Streamlined 75% Layout. The 81-key layout allows users to free up more desktop space.

Figure 2: DAREU A81 Wired Mechanical Keyboard featuring Elastic Arm Gasket Construction with high toughness silicone.

2. Specifications

Figure 3: Product parameters detailing dimensions, weight, connection type, key distribution, shaft body, and LED light.

Figure 4: Axis Body Selection. Specifications for Purple Gold Axis (paragraph axis) and Sky Axis (linear axis).

• Purple Gold Axis (Paragraph Axis): Trigger force: 45 ± 8gf, Trigger stroke: 2.1 ± 0.3mm, Total stroke: 2.1 ± 0.3mm. Offers a strong tactile 'beating paragraph sense' similar to a typewriter.
• Sky Axis (Linear Axis): Trigger force: 40 ± 3gf, Trigger stroke: 2.0 ± 0.4mm, Total stroke: 4.0 ± 0.4mm. Provides a smooth, straight up and down feel with relatively small sound.

3. Setup Instructions

3.1 Connecting the Keyboard

The DAREU A81 supports three connection modes: Wired, Bluetooth, and 2.4Ghz Wireless.

Wired Connection:

1. Locate the Type-C port on the keyboard.
2. Connect the provided Type-C cable to the keyboard and your computer's USB port.
3. The keyboard will be automatically recognized and ready for use.

Figure 5: Fast wired connection via Type-C interface for stable transmission and plug-and-play convenience.

Bluetooth / 2.4Ghz Wireless Connection:

Specific instructions for Bluetooth and 2.4Ghz wireless pairing are typically found in the quick start guide included with the product. Generally, you will need to:

1. Switch the keyboard to the desired wireless mode (Bluetooth or 2.4Ghz).
2. For 2.4Ghz, insert the USB receiver into your computer.
3. For Bluetooth, enable Bluetooth on your device and search for the keyboard to pair.

4. Operating Instructions

4.1 Backlight Effects and Keyboard Functions

The DAREU A81 features customizable RGB backlighting and various function key combinations:

Figure 6: FN Key Combinations for Backlight and Settings.

• FN + [ : Cycle through 8 adjustable backlight effects including Ripple Pattern, Breathing pattern, Running horse mode, Wave mode, Running lap pattern, Steady on mode, Raindrop mode, and Press Fade Out mode.
• FN + ESC: Restore factory settings.
• FN + Spacebar: Adjust screen brightness.
• N-key Rollover: The keyboard features a full key no impact design, ensuring all key presses are registered accurately, even during rapid typing or complex gaming commands.
• Dual System Support: The keyboard is compatible with both Mac and Windows operating systems.

4.2 Battery Management

The keyboard is equipped with a built-in 4000mAh lithium battery. Battery life varies based on usage and backlight settings:

• Over one month with lights off.
• Approximately 7 days with lights on.

The intelligent sleep function helps conserve battery life. To maximize battery duration, consider turning off the backlight when not needed.

Figure 7: Built-in 4000mAh Lithium Battery. Battery life estimates are based on DAREU Laboratory data; actual conditions may vary.

5. Maintenance

5.1 Cleaning

To maintain your keyboard's performance and appearance:

• Disconnect the keyboard from your computer before cleaning.
• Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution to wipe the keycaps and chassis.
• For dust and debris between keys, use compressed air.
• Avoid harsh chemicals or abrasive materials that could damage the keyboard's finish or keycap legends.

5.2 Keycap and Switch Replacement

The DAREU A81 features hot-swappable switches, allowing for easy customization and replacement without soldering.

Figure 8: Exploded view of keyboard components, showing transparent key cap, top cap, custom shaft, PCB circuit board, PCB satellite shaft, PORON cotton, silicone cover, and foot pads.

Figure 9: Disassembly drawing of the keyboard, illustrating PBT Keys, Decorative pieces, Top cover, Sandwich silencing silicone, Mechanical shaft, Receiver, Poron cotton, PCB circuit board, Elastic arm silicone, Lower cover, and Foot pads.

• To remove a keycap, use a keycap puller to gently lift it straight up.
• To remove a switch, use a switch puller to grasp the top and bottom clips of the switch and pull it straight out.
• When installing new switches, ensure the pins are aligned correctly with the sockets on the PCB to avoid bending. Press firmly until the switch clicks into place.
• Replace keycaps by aligning them with the switch stem and pressing down gently.

6. Troubleshooting

• Keyboard not responding (Wired):
  Ensure the Type-C cable is securely connected to both the keyboard and the computer. Try a different USB port or cable.
• Keyboard not responding (Wireless):
  Check if the keyboard is in the correct wireless mode (Bluetooth or 2.4Ghz). For 2.4Ghz, ensure the USB receiver is properly inserted. For Bluetooth, verify that Bluetooth is enabled on your device and the keyboard is paired. Check battery level.
• Backlight not working or incorrect:
  Press FN + [ to cycle through backlight effects. If the issue persists, try performing a factory reset (FN + ESC).
• Keys not registering:
  Ensure the keyboard is properly connected. If using hot-swappable switches, gently press down on the affected switch to ensure it is fully seated. If a specific switch is faulty, it can be replaced.
• Intermittent connectivity:
  For wireless modes, ensure there are no strong interference sources nearby. Try moving closer to the receiver/device. Ensure the keyboard battery is sufficiently charged.

7. User Tips

• Maximize Battery Life: To extend battery life, utilize the intelligent sleep function and consider turning off the RGB backlight when not actively using the keyboard, especially in wireless modes.
• Customization: Take advantage of the hot-swappable switch feature to experiment with different switch types (e.g., linear Sky axis for smooth typing, tactile Purple Gold axis for a 'typewriter' feel) to find your preferred typing experience.
• Enhanced Typing Feel: The gasket construction, combined with PORON cotton and silicone, significantly improves the typing sound and feel by reducing harsh bottom-out impacts and hollow sounds.

8. Warranty and Support

For warranty information and technical support, please refer to the official DAREU website or contact your retailer. Keep your proof of purchase for any warranty claims.