1. Product Overview
The AULA L99 is an intelligent custom mechanical keyboard designed for e-sports and general computing. It features a compact 84-key layout, a 3.98-inch IPS touch screen, and versatile tri-mode connectivity (wired, 2.4G wireless, and Bluetooth). Built with a Gasket structure and an 8000mAh battery, it offers a premium typing experience and extended usage.

Figure 1: AULA L99 Keyboard Overview
Video 1: AULA L99 Product Showcase
Key Features:
- Fashionable Design: Gasket structure for a delicate and soft touch.
- Customizable: Hot-swappable keycaps and mechanical switches for DIY personalization.
- Responsive: Solid materials and sensitive key response.
- Integrated Screen: 3.98-inch TFT touch screen for various functions and customization.
- Long Battery Life: 8000mAh rechargeable lithium battery with power switch.
- Reliable Connectivity: Type-C port for stable wired connection.
- Compact Layout: 84-key (80%) layout saves space.
2. Setup
2.1 Initial Charging
Before first use, it is recommended to fully charge the keyboard. The TFT screen will display the battery life.
- Connect the keyboard to a computer's USB port using the provided USB-C cable.
- Avoid using fast-charging cell phone chargers or inferior power adapters.
- Do not use over-voltage or over-current power adapters.
- Keep the keyboard away from high-temperature environments during charging.
- If not in use for an extended period, turn off the power switch.
2.2 Connecting the Keyboard
The AULA L99 supports three connection modes: Wired, 2.4G Wireless, and Bluetooth.
Wired Mode:
- Connect the USB-C cable to the keyboard and the other end to your computer.
- On the keyboard's TFT screen, navigate to 'Settings' and then 'Connection'.
- Select the wired mode option. The corresponding icon will appear on the main menu upon successful connection.
2.4G Wireless Mode:
- On the keyboard's TFT screen, navigate to 'Settings' and then 'Connection'.
- Select the 2.4G mode option to enter pairing mode.
- Insert the 2.4G USB receiver into your computer. The screen will display 'Linking Successful'.
- If connection fails, ensure the receiver is plugged in after initiating pairing on the keyboard.
Bluetooth Mode:
- On the keyboard's TFT screen, navigate to 'Settings' and then 'Connection'.
- Select one of the Bluetooth channels (BT1, BT2, or BT3) to enter pairing mode. The device name will be 'AULA L99-1', 'AULA L99-2', or 'AULA L99-3'.
- On your computer or device, open Bluetooth settings and search for 'AULA L99-X'.
- Click to connect. The keyboard screen will display 'successfully connected'.
- The keyboard can connect to up to 3 Bluetooth devices simultaneously.

Figure 2: Tri-mode Connectivity
3. Operating Instructions
3.1 Keyboard Layout and Functions
The AULA L99 features an 84-key compact layout, saving approximately 20% space compared to ordinary keyboards.

Figure 3: 80% Layout (84-Key)
3.2 TFT Touch Screen Functions
The 3.98-inch TFT touch screen on the right side of the keyboard provides access to various settings and features:
- Settings: Access connection modes, system settings (WIN/MAC), DPI, key debounce time, time, alarm, sound & touch, language, and about information.
- Custom Animation: Customize animations via the keyboard's drivers.
- Personalized Screen: Choose GIF animations, background images, adjust screen brightness, and customize images using drivers.
- Instant Data & Memo: Utilize these features in conjunction with the keyboard's drivers.
- Mini Keyboard: Use the on-screen numeric keypad for input.
- Media Controls: Adjust volume (+/-), mute, and set alarms directly from the screen interface.
3.3 Light Adjustment
The keyboard offers extensive backlight customization:
- Color Modes: Switch between RGB, red, orange, yellow, green, cyan, blue, purple, and white.
- Adjustments: Control light brightness, speed, and direction.
- Lighting Effects: Choose from 20 RGB lighting effects, including Wave Follow, Winding Path, Flicker Strike, Ripple Pulse, Stacked Peaks, Drizzle Glow, Shuttle Light, Static Constant Light, Twinkling Stars, Whirling Snow, and more.
- Driver Customization: In wired and 2.4G modes, customize each key with functions and macros, supporting over 16 million colors.
- Music Rhythm: RGB lighting effects can synchronize with music rhythm via drivers.
3.4 System Switching (WIN/MAC)
To switch between Windows and Mac operating systems:
- On the TFT screen, navigate to 'Settings' and then 'System'.
- Select 'WIN' or 'MAC' to switch the keyboard's layout and key functions.
- When switched to Mac system, the Left WIN and Left ALT keys are swapped.
Key Position Mapping:
| System | Left WIN | Left ALT | Right ALT | Right CTRL |
|---|---|---|---|---|
| WIN/Android | Left WIN | Left ALT | Right ALT | Right CTRL |
| Mac/iOS | Left Option | Left Command | Right Command | Right Option |
3.5 Shortcut Keys (Fn Combinations)
The keyboard features various Fn key combinations for quick access to functions. These may vary slightly between Android, Windows, Mac, and iOS systems.
Standard Shortcuts:
- Fn + ESC: Restore Default
- Fn + WIN-L: Lock WIN key
- Fn + \|: Switch lighting effects
- Fn + TAB: Switch lighting effect colors
F-Zone Functions (Examples - refer to manual for full list):
- F1/Fn+F1: Screen brightness control (Android/Mac/iOS), Homepage (Windows)
- F2/Fn+F2: Screen brightness control (Android/Mac/iOS), Mail (Windows)
- F3/Fn+F3: Convert Window
- F4/Fn+F4: Return to desktop (Android/Mac/iOS), Explorer (Windows)
- F5/Fn+F5: Main backlight brightness control
- F6/Fn+F6: Main backlight brightness control
- F7/Fn+F7: Previous song
- F8/Fn+F8: Play/Pause
- F9/Fn+F9: Next song
- F10/Fn+F10: Mute
- F11/Fn+F11: Volume-
- F12/Fn+F12: Volume+
3.6 Automatic Sleep System
In 2.4G wireless or Bluetooth mode, if there is no operation for 5 minutes, the keyboard will automatically enter power-saving mode. Press any key to wake it up.
4. Maintenance
4.1 Cleaning
- Use a soft, lint-free cloth to wipe the keyboard surface.
- For dust and debris between keys, use compressed air.
- Avoid using harsh chemicals or abrasive materials.
4.2 Switch and Keycap Replacement
The AULA L99 features full-key hot-swappable switches, allowing for easy replacement and customization.
- Gently pull off the keycap using a keycap puller.
- Use a switch puller to carefully remove the mechanical switch from its socket.
- Align the pins of the new switch with the holes on the PCB and press firmly until it clicks into place.
- Place the desired keycap onto the new switch.

Figure 4: Hot-Swappable Switches

Figure 5: Gasket Structure Overview
5. Troubleshooting
5.1 Connection Issues
- Keyboard not connecting (2.4G/Bluetooth): Ensure the keyboard is in pairing mode via the TFT screen. For 2.4G, ensure the receiver is properly inserted. For Bluetooth, check if the device's Bluetooth is on and discoverable.
- 'Linking Fail' message: This indicates a connection timeout. Try re-initiating pairing on the keyboard and your device.
- Intermittent connection: Ensure the keyboard is within the 10m operating distance and there are no major obstructions or interference sources.
5.2 Power and Charging Issues
- Keyboard not charging: Ensure the USB-C cable is securely connected to both the keyboard and a working USB port (preferably a computer's USB port). Avoid using incompatible chargers.
- Short battery life: Ensure the keyboard is fully charged. High backlight brightness and continuous screen use can consume more power.
- Keyboard unresponsive: Check battery level. If low, charge the keyboard. If fully charged, try switching connection modes or restarting the keyboard.
5.3 Backlight Issues
- Backlight not working: Check backlight settings via the TFT screen or Fn key combinations to ensure it's not turned off or set to minimum brightness.
- Incorrect backlight color/effect: Adjust settings via the TFT screen or Fn key combinations.
6. Specifications
| Feature | Specification |
|---|---|
| Number of Keys | 84 keys |
| Total Key Travel | 4.0 mm |
| FN Key | Multi-function |
| Product Dimensions | 390.5 x 140.72 x 43.34 mm ±0.1 mm |
| Product Weight | Approx. 1216 g (without cable/receiver), 1263 g (with cable/receiver) |
| Rated Voltage | DC 3.7V (4.2V when fully charged) |
| Rated Current | ≤400 mA (backlight on) / ≤70 mA (backlight off) |
| Charging Voltage/Current | DC 5V ⎓ 1300 mA |
| Battery Capacity | 8000 mAh rechargeable lithium battery |
| Keyboard Polling Rate | Wired 1000 Hz / 2.4G 1000 Hz / BT 125 Hz |
| Operating Distance | 10 m |
| System Requirements | Windows XP/7/8/10 (USB 1.1+), macOS/Android/iOS (BLE 4.0/5.0+) |

Figure 6: 8000mAh Battery Life
7. User Tips
- Customization: Take advantage of the hot-swappable switches and keycaps to personalize your typing feel and aesthetics. Many users enjoy experimenting with different switch types.
- Screen Features: Explore the various functions of the IPS touch screen, including custom animations and quick access to settings, to enhance your workflow.
- Connectivity: Utilize the tri-mode connection to seamlessly switch between devices, whether for gaming on a PC, typing on a tablet, or working on a laptop.
8. Warranty and Support
AULA products are manufactured to high-quality standards. For warranty information, technical support, or service inquiries, please refer to the official AULA website or contact your retailer. Please retain your proof of purchase for warranty claims.