YK75 Three-Mode Low-Profile Keyboard User Manual

Introduction

Thank you for choosing the YK75 Three-Mode Low-Profile Keyboard. This manual provides detailed instructions on how to set up, operate, and maintain your new keyboard. Please read this manual carefully before use to ensure optimal performance and longevity of your device.

Image: YK75 Keyboard and its packaging.

Important Notice

• Based on the USB protocol, the keyboard's rated charging voltage is 5V. We recommend charging the keyboard via a computer's USB port; do not use a charger to charge the keyboard!
• Never place the keyboard on a heating pad while in use (as heating pads can raise the keyboard's temperature, causing deformation, chip burnout, and other issues).
• Do not allow liquids to enter the product during use to prevent short circuits and electrical malfunctions.

*Users are solely responsible for any product damage resulting from the above causes.

Package Contents

Please check the package for the following items:

• YK75 Three-Mode Low-Profile Keyboard
• USB-C Cable
• 2.4G USB Receiver
• Keycap Puller
• User Manual (this document)

Image: The YK75 keyboard, USB-C cable, and keycap puller included in the package.

Specifications

Image: Detailed product parameters including dimensions, weight, and battery capacity.

Image: Comparison of low-profile switch (12.2mm height) and traditional switch (17.9mm height).

Setup

Charging the Keyboard

The keyboard has a built-in 1850 mAh battery. For initial use or when the battery is low, connect the keyboard to a computer's USB port using the provided USB-C cable. The rated charging voltage is 5V. Avoid using wall chargers to prevent potential damage.

Connecting the Keyboard (Three Modes)

The YK75 keyboard supports three connection modes: Wired (USB-C), 2.4G Wireless, and Bluetooth. Use the three-position toggle switch located in the upper right corner of the keyboard to select your desired mode.

Image: Close-up of the keyboard's rear, showing the Win/Mac mode switch, 2.4G/BT toggle switch, and the 2.4G magnetic storage slot.

1. Wired Mode (USB-C):
   Set the toggle switch to the middle position (wired mode icon). Connect the USB-C cable from the keyboard to your computer. The keyboard will be recognized automatically.
2. 2.4G Wireless Mode:
   Set the toggle switch to the 2.4G position. Press and hold the FN + 4 keys simultaneously until the indicator light in the upper right corner of the keyboard flashes rapidly. Plug the 2.4G USB receiver into an available USB port on your computer. The keyboard will automatically pair.
3. Bluetooth Wireless Mode:
   Slide the toggle switch to the BT (Bluetooth) position. Press and hold FN + 1, FN + 2, or FN + 3 to select a Bluetooth channel. The indicator light in the upper right corner will flash blue rapidly. On your device (computer, tablet, or phone), search for Bluetooth devices and select "84KYE" to connect.

Image: The YK75 keyboard seamlessly switching between a laptop, tablet, and smartphone using FN+1/FN+2/FN+3.

Operating Instructions

Backlight Control

The YK75 keyboard features dynamic RGB backlighting with 16.8 million colors and 18 driver-free lighting modes. Use the following key combinations to control the backlight:

• FN + Backspace: Turn off the backlight with a single press; press again to turn it on.
• FN + Ins: Cycle through different backlight modes.
• FN + End: Change the direction of dynamic lighting effects.
• FN + →: Increase lighting effect speed.
• FN + ←: Decrease lighting effect speed.
• FN + ↑: Increase backlight brightness.
• FN + ↓: Decrease backlight brightness.

Image: The YK75 keyboard displaying its vibrant RGB lighting and key combinations for backlight control.

Multi-System Compatibility

The YK75 keyboard supports Windows, macOS, iOS, and Android systems. You can quickly switch between systems without lag.

Image: The YK75 keyboard seamlessly integrated with a MacBook and an iPad, demonstrating multi-system support.

Hot-Swappable Switches

The YK75 features hot-swappable switch sockets, allowing you to easily change switches without soldering. This provides flexibility for customizing your typing experience.

PBT Keycaps

The keyboard is equipped with PBT dye-sublimation keycaps, known for their durability, resistance to shine, and comfortable matte texture. The legends are clear and resistant to wear.

Image: Close-up of the YK75's PBT dye-sublimation keycaps, highlighting their texture and clear legends.

Ergonomic Design

The YK75 is designed with ergonomics in mind to provide a comfortable typing experience and reduce hand fatigue during long sessions.

Image: The ergonomic design of the YK75 keyboard, promoting relaxed hand posture.

Maintenance

• Cleaning: Use a soft, dry cloth to wipe the keyboard surface. For deeper cleaning, use a keycap puller to remove keycaps and clean dust or debris with compressed air or a small brush. Do not use harsh chemicals or abrasive materials.
• Storage: When not in use for extended periods, store the keyboard in a cool, dry place away from direct sunlight and extreme temperatures.
• Liquid Exposure: In case of liquid spills, immediately disconnect the keyboard from all power sources and turn it upside down to drain. Allow it to dry completely for at least 24-48 hours before attempting to use it again. Do not use a hairdryer or other heat sources, as this may cause further damage.

Troubleshooting

• Keyboard not responding:
  Ensure the keyboard is properly charged. Check the connection mode switch (Wired, 2.4G, or Bluetooth) and ensure it matches your connection method. For wired mode, try a different USB port or cable. For 2.4G, ensure the receiver is plugged in and try re-pairing (FN+4). For Bluetooth, ensure it's paired correctly (FN+1/2/3 and search for "84KYE") and try re-pairing.
• Keys not registering or double-typing:
  This could be due to dust or debris under the keycap or switch. Try cleaning the affected area. If the issue persists, consider replacing the switch, as the keyboard is hot-swappable.
• Backlight not working or flickering:
  Check backlight brightness (FN+↑/↓) and ensure it's not turned off (FN+Backspace). If the issue persists, try cycling through backlight modes (FN+Ins).
• Bluetooth connection issues:
  Ensure the keyboard is in Bluetooth mode and the correct channel (FN+1/2/3) is selected. Make sure your device's Bluetooth is on and try forgetting/removing the keyboard from your device's Bluetooth settings, then re-pair. Ensure the keyboard is within range of your device.
• 2.4G wireless lag or disconnection:
  Ensure the 2.4G receiver is plugged into a front USB port on your computer if possible, to minimize interference. Keep the keyboard close to the receiver. Avoid placing the receiver near other wireless devices that might cause interference.

User Tips

No specific user tips were available from reviews or Q&A at this time. However, general tips for mechanical keyboard users include:

• Experiment with different backlight modes and brightness levels to find your preferred aesthetic.
• Take advantage of the hot-swappable switches to try different switch types if you desire a change in typing feel or sound.
• Regularly clean your keyboard to prevent dust buildup, which can affect key performance.

Warranty & Support

For any issues not covered in this manual, or for warranty claims, please contact the seller or manufacturer directly. Keep your proof of purchase for warranty purposes.

A detailed user manual in PDF format is available for download. You can find it at the following link: YK75 User Manual (PDF).