Introduction
This manual provides detailed instructions for the HXSJ L300 104-Key Wired Mechanical Gaming Keyboard. Please read this manual thoroughly before using the product to ensure proper operation and to maximize your user experience.
The HXSJ L300 keyboard is designed to offer responsive operational capabilities and an immersive gaming experience. Its sensitive, tactile keys provide good resistance, aiding in precise typing. The keyboard features multiple lighting effects and durable keycaps made with double-shot injection molding technology to prevent fading and wear. It is compatible with various operating systems, including Win Me/2000/XP/7/8/10/Vista.
Package Contents
- 1 x HXSJ L300 Mechanical Gaming Keyboard
- 1 x User Manual
Specifications
| Feature | Detail |
|---|---|
| Brand | Goshyda (HXSJ) |
| Model | L300 |
| Material | ABS |
| Color | Black |
| Key Quantity | 104 Keys |
| Switch Type | Clicky Mechanical Switches |
| Interface | USB Wired |
| Cable Length | Approx. 168 cm (66 inches) |
| Key Lifespan | 50 Million Keystrokes |
| Backlight Effect | Color Backlight (RGB) |
| Compatible Systems | Win Me/2000/XP/7/8/10/Vista |
| Connectivity Technology | USB |
| Compatible Devices | PC, Laptop |

Image: Top-down view of the HXSJ L300 mechanical keyboard, showcasing its full 104-key layout, black keycaps, and the attached USB cable with its connector.
Setup
- Unpack the Keyboard: Carefully remove the HXSJ L300 keyboard from its packaging.
- Connect to Computer: Locate an available USB port on your PC or laptop. Insert the USB connector of the keyboard cable into the USB port.
- Driver Installation (Automatic): The keyboard is plug-and-play. Your operating system (Windows Me/2000/XP/7/8/10/Vista) should automatically detect and install the necessary drivers. No manual driver installation is typically required.
- Verify Functionality: Once connected, the keyboard's backlight should illuminate. Test typing and key responsiveness to ensure proper function.

Image: The HXSJ L300 mechanical keyboard in use, connected to a laptop. The keyboard's RGB backlighting is visible, and a mouse and pen are also on the wooden desk, illustrating a typical setup.
Operating Instructions
Multimedia Key Combinations (FN Key Functions)
The HXSJ L300 keyboard features a Function (FN) key that, when combined with specific F-keys, provides quick access to multimedia and system controls. Press and hold the FN key, then press the desired F-key.
- FN + F1: Open Computer / My Computer
- FN + F2: Search
- FN + F3: Open Calculator
- FN + F4: Open CD Player / Media Player
- FN + F5: Previous Track
- FN + F6: Next Track
- FN + F7: Play/Pause
- FN + F8: CD Stop
- FN + F9: Mute Audio
- FN + F10: Volume Down
- FN + F11: Volume Up
- FN + F12: Lock All Keys
- WIN + L: Lock Windows and Applications

Image: A visual guide to the FN+Multimedia key combinations available on the HXSJ L300 keyboard, detailing functions like opening applications, media control, and volume adjustment.
Backlight Control
The keyboard features various RGB backlight effects. You can adjust these effects using specific key combinations:
- FN + INS: Cycle through different backlight modes/effects.
- FN + "↑" (Up Arrow): Increase backlight brightness (6 levels).
- FN + "↓" (Down Arrow): Decrease backlight brightness (6 levels).
- FN + "←" (Left Arrow): Decrease backlight effect speed (5 levels).
- FN + "→" (Right Arrow): Increase backlight effect speed (5 levels).

Image: A visual representation of the RGB backlight control functions, showing how to adjust brightness and speed of lighting effects using FN key combinations.

Image: The HXSJ L300 mechanical keyboard illuminated with vibrant RGB backlighting, showcasing its aesthetic appeal and customizable lighting options.
Maintenance
- Cleaning: Use a soft, dry cloth to wipe the surface of the keyboard. For deeper cleaning, you may use a can of compressed air to remove dust and debris from between the keycaps. Avoid using liquid cleaners directly on the keyboard.
- Keycap Removal (Optional): If necessary, keycaps can be carefully removed for thorough cleaning of the switches. Use a keycap puller tool (not included) to avoid damage. Reinstall keycaps by aligning them with the switch stem and pressing down gently.
- Storage: When not in use for extended periods, store the keyboard in a dry, dust-free environment.
- Avoid Liquids: Do not expose the keyboard to liquids, as this can cause damage to the internal components.

Image: A detailed view of the HXSJ L300 keyboard's keycaps and mechanical switches. This image illustrates the two-color injection molding process for durable key legends and the structure of the mechanical switches, which have a lifespan of 50 million keystrokes.

Image: An exploded diagram of a mechanical keyboard switch, detailing its various components such as the stem, spring, and housing. This illustrates the "automated shaft exchange real machinery" aspect of the keyboard's design, contributing to its 50 million keystroke lifespan.
Troubleshooting
- Keyboard Not Responding:
- Ensure the USB cable is securely plugged into both the keyboard and the computer's USB port.
- Try plugging the keyboard into a different USB port on your computer.
- Restart your computer.
- Test the keyboard on another computer to determine if the issue is with the keyboard or the computer.
- Backlight Not Working or Incorrect:
- Check if the backlight is turned off or set to the lowest brightness. Use FN + "↑" to increase brightness.
- Cycle through backlight modes using FN + INS to see if it resolves the issue.
- Keys Not Registering or Double-Typing:
- Clean the affected key(s) using compressed air to remove any debris that might be obstructing the switch.
- If comfortable, carefully remove the keycap and inspect the switch for any visible damage or obstruction.
- Multimedia Keys Not Functioning:
- Ensure you are pressing the FN key simultaneously with the desired F-key.
- Some multimedia functions may require specific software or drivers on your operating system. Ensure your system is up to date.
Warranty and Support
Information regarding specific warranty terms and customer support for the HXSJ L300 keyboard is not provided in the product details. For warranty claims or technical assistance, please refer to the retailer where the product was purchased or contact the manufacturer directly if contact information is available on the product packaging or official website.
Ergonomics and Keycap Design
The HXSJ L300 keyboard features a floating high and low keycap layout designed for ergonomics, aiming to fit fingers comfortably and provide a pleasant typing experience.

Image: A hand positioned over the HXSJ L300 keyboard, demonstrating the ergonomic "floating high and low keycap layout" which is designed to provide a comfortable and natural typing or gaming posture.





