1. Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your ATTACK SHARK Ajazz AK820 Pro Mechanical Keyboard. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.

Figure 1: ATTACK SHARK Ajazz AK820 Pro Mechanical Keyboard Overview
2. What's in the Box
Verify that all items are present in the package:
- ATTACK SHARK Ajazz AK820 Pro Mechanical Keyboard
- Keycap Puller
- USB Cable (Type-C)
- User Manual (this document)

Figure 2: Key features and included accessories
3. Setup
3.1 Connectivity Modes
The Ajazz AK820 Pro keyboard supports three connection modes: Bluetooth 5.1, 2.4GHz Wireless, and Type-C Wired. The mode can be selected using the switches located on the underside of the keyboard.

Figure 3: Three Modes of Connection
3.1.1 2.4GHz Wireless Connection
- Locate the 2.4GHz USB receiver in the keyboard's storage slot.
- Plug the USB receiver into an available USB port on your computer.
- Switch the keyboard's mode selector to '2.4G'. The keyboard will automatically connect.
3.1.2 Bluetooth Connection
- Switch the keyboard's mode selector to 'BT'.
- On your device, enable Bluetooth and search for new devices.
- Select 'Ajazz AK820 Pro' from the list of available devices to pair.
- The keyboard can store up to 3 Bluetooth devices. Use FN+Q/W/E to switch between paired devices.
3.1.3 Type-C Wired Connection
- Connect the provided USB Type-C cable to the keyboard's port.
- Connect the other end of the USB cable to an available USB port on your computer.
- Switch the keyboard's mode selector to 'USB'. The keyboard will be recognized automatically.
3.2 Adjustable Tilt Legs
The keyboard features two-stage adjustable tilt legs on its underside, allowing you to set the typing angle for ergonomic comfort. Adjust the legs to your preferred height to reduce wrist strain during extended use.
4. Operating Instructions
4.1 Multi-function TFT Color Display Screen & Metal Knob
The keyboard is equipped with a TFT color display screen and a rotary metal knob for intuitive control and customization.

Figure 4: Multimedia Knob and TFT Display Functions
- Knob Functionality:
- Rotate the knob to adjust volume, RGB brightness, or navigate display menus.
- Press the knob to mute/unmute audio or confirm selections.
- Press FN + Knob to enter/exit the settings page on the display.
- TFT Display Functions:
- Displays battery status, date & time, connectivity mode, and operating system.
- Allows customization of desktop images or GIF animations via driver software.
- Provides visual feedback for backlight effects, brightness, and color adjustments.

Figure 5: TFT Color Smart Display Content and Customization
Video 1: Demonstration of the Smart Display and Knob functions, including 2.4G Wireless, Bluetooth, and USB connectivity.
Video 2: Overview of the ATTACK SHARK Ajazz AK820 Pro Mechanical Keyboard, highlighting its features and design.
Video 3: Detailed look at the Ajazz AK820 Pro Mechanical Keyboard's knob and TFT display functionalities.
4.2 RGB Lighting Control
The keyboard features South-facing LEDs with 1.6 million RGB color options and over 18 lighting effects. Lighting can be controlled via key combinations or the knob.

Figure 6: RGB Backlit Effects and Controls
- Press FN + | to cycle through 20 different lighting effects.
- Press FN + X to turn RGB lighting On/Off.
- Press FN + ↑/↓ to adjust brightness.
- Press FN + ←/→ to change light color.
- Press FN + Space to reset lighting settings.
- Customizable RGB lighting can also be configured via the driver software.
4.3 Hot-Swappable Mechanical Switches
The PCB supports 3/5-pin hot-swap switches, allowing for easy replacement of switches without soldering. This enables customization of typing feel and sound.

Figure 7: Hot-Swappable Switches and Keycap Puller
The keyboard comes with a 2-in-1 keycap and switch puller for convenient removal and installation.
4.4 Gasket-Mounted Design
The keyboard features a gasket-mounted design with five layers of sound insulation materials (Poron sandwich cotton, IXPE under-axis pad, PET premium sound pad, and bottom cotton/silicone). This construction significantly reduces vibration and noise, providing a stable and comfortable typing experience.

Figure 8: Gasket Design Layers
5. Maintenance
5.1 Cleaning
- Regularly clean the keyboard with a soft, dry cloth.
- For dust and debris between keycaps, use compressed air.
- To clean under keycaps, use the provided keycap puller to carefully remove them. Clean the switches and plate with a soft brush or cloth. Reinstall keycaps by pressing them firmly onto the switch stems.
5.2 Battery Care
The keyboard is equipped with a 4000mAh large-capacity battery. To prolong battery life:
- Avoid fully discharging the battery frequently.
- Charge the keyboard using the provided USB Type-C cable.
- If storing the keyboard for an extended period, charge it to approximately 50% before storage.

Figure 9: 4000mAh Long Battery Life
6. Troubleshooting
- Keyboard not responding: Ensure the correct connection mode (Wired, 2.4G, or BT) is selected. Check cable connection for wired mode or battery level for wireless modes.
- 2.4GHz wireless connection issues: Ensure the USB receiver is securely plugged in. Try a different USB port. Re-pair by switching the keyboard off and then back to 2.4G mode.
- Bluetooth connection issues: Ensure Bluetooth is enabled on your device. Forget the device in your device's Bluetooth settings and re-pair. Ensure the keyboard is in BT mode and not connected to another device.
- RGB lighting not working: Check if RGB is turned off (FN + X). Adjust brightness (FN + ↑). If issues persist, try resetting lighting settings (FN + Space).
- TFT display not showing information: Ensure the keyboard is powered on. If the display is blank, try pressing FN + Knob to enter/exit settings. If custom images are not displaying, ensure the driver software is correctly configured and the image is uploaded.
- Keys not registering: If specific keys are not working, the switch might be faulty. Due to the hot-swappable design, you can replace individual switches.
- Unexpected behavior: Try performing a factory reset (refer to driver software or specific key combination if available in future updates).
7. Specifications
| Feature | Description |
|---|---|
| Product Dimensions | 12.87 x 5.35 x 1.57 inches |
| Item Weight | 2.2 pounds |
| Connectivity Technology | Bluetooth 5.1, 2.4G Wireless, USB-C |
| Keyboard Description | Gaming, Mechanical, Wireless |
| Recommended Uses | Office, Personal, Gaming, Business |
| Special Features | Ergonomic, Backlit, CNC Metal Volume Roller, TFT Smart Display Screen, Hot-Swappable |
| Color | Black (Flying Fish Switch) |
| Number of Keys | 81 |
| Keyboard Backlighting | RGB (South-facing LEDs) |
| Battery Capacity | 4000mAh |
| Country of Origin | China |
8. Warranty and Support
For warranty information and technical support, please refer to the official ATTACK SHARK website or contact your retailer. Keep your purchase receipt as proof of purchase for warranty claims.







