1. Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your Levieny Wired 34-Key USB Numeric Keypad, Model NK300-W. This device is designed to enhance numerical data entry and provide additional functional keys for various computing tasks.
The keypad features 34 keys, including standard numeric keys, arithmetic operators, and extended function keys such as Esc, Tab, Back Space, Delete, Home, End, Page Up, Page Down, and four arrow keys. It connects via USB and is compatible with both Windows and Mac operating systems.
2. Package Contents
- 1 x Levieny Wired 34-Key USB Numeric Keypad (Model NK300-W)
- 1 x User Manual
3. Setup Instructions
3.1 Connecting the Keypad
The Levieny NK300-W Numeric Keypad utilizes a simple plug-and-play design for immediate use.
- Locate an available USB port on your computer (laptop, desktop, or compatible tablet).
- Insert the USB connector of the keypad cable into the USB port.
- The operating system will automatically detect and install the necessary drivers. No additional software installation is required.

Image: The USB cable connected to a laptop, illustrating the wired connection.
3.2 Initial Use
Once connected, the keypad is ready for use. The device is designed with an OS identification IC that automatically adjusts key functions to match Windows or Mac operating systems.

Image: The keypad positioned on a wooden desk, highlighting its compatibility with both Windows and Mac operating systems.
4. Operating Instructions
4.1 Key Functions Overview
The 34-key layout includes a comprehensive set of keys for various tasks:
- Numeric Keys (0-9): Standard number input.
- Arithmetic Operators (+, -, *, /): For calculations.
- Decimal Point (.): For fractional numbers.
- Enter: Confirms input or action.
- Esc: Escape function.
- Tab: Moves cursor to the next field or tab stop.
- Back Space: Deletes characters to the left of the cursor.
- Delete: Deletes characters to the right of the cursor.
- Home/End: Navigates to the beginning/end of a line or document.
- Page Up/Page Down: Scrolls content up or down.
- Prt Sc (Print Screen): Captures a screenshot (Windows).
- Four Arrow Direction Keys: For navigation.

Image: A close-up of the keypad, illustrating the layout and labeling of its powerful functional keys.
4.2 Operating System Specific Functions
The keypad automatically adjusts certain key functions based on the connected operating system.
Windows OS:
- Prt Sc: Functions as Print Screen.
- F14: Functions as Calculator shortcut.
- F15: Functions as Left Parenthesis.
- F16: Functions as Right Parenthesis.
Mac OS:
F13-F16 keys can be customized as shortcuts through your system settings.

Image: A visual guide detailing the description of different operating systems and how the keypad's F-keys adapt their functions.
4.3 Num Lock Functionality
The Num Lock function operates independently of any connected main keyboards. This ensures consistent numeric input without affecting your primary keyboard's settings.

Image: The keypad showing the Num Lock indicator light. When the light is on, numbers and symbols can be input. When off, arrow keys and editing functions are active.
4.4 Data Entry and Editing
The keypad is designed to facilitate quick numeric input and data editing in applications like Excel.
Video: Demonstrates the keypad's use for quick numeric input, opening the calculator, and editing data in programs like Microsoft Excel.
5. Maintenance
To ensure the longevity and optimal performance of your numeric keypad, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the surface of the keypad. For stubborn dirt, slightly dampen the cloth with water or a mild cleaning solution. Avoid harsh chemicals or abrasive materials.
- Storage: When not in use, store the keypad in a clean, dry environment away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping the keypad or exposing it to excessive force, which could damage the internal components or key mechanisms.
- Liquid Exposure: Prevent liquids from entering the keypad. If liquid spills occur, immediately disconnect the keypad and allow it to dry completely before reconnecting.

Image: A detailed view of a key on the keypad, illustrating the comfortable and quiet scissor-like key structure.
6. Troubleshooting
If you encounter issues with your Levieny Numeric Keypad, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Keypad is not responding. | Loose USB connection, faulty USB port, driver issue. | Ensure the USB cable is securely plugged into both the keypad and the computer. Try a different USB port. Restart your computer. |
| Numeric keys are not typing numbers. | Num Lock is off. | Press the 'Num Lock' key on the keypad to activate numeric input. The indicator light should turn on. |
| Some keys function differently than expected (e.g., arrow keys instead of numbers). | Num Lock is off (for numeric keys), or OS specific function mapping. | Ensure Num Lock is on for numeric input. Refer to Section 4.2 for OS-specific key functions. |
| Keypad is recognized but input is intermittent. | Dust or debris under keys, cable damage. | Clean the keypad as described in Section 5. Inspect the USB cable for any visible damage. Try a different cable if available. |
7. Specifications
Detailed technical specifications for the Levieny Wired 34-Key USB Numeric Keypad (Model NK300-W):
| Feature | Detail |
|---|---|
| Product Name | Wired Numeric Keypad |
| Product Model | NK300-W |
| Layout | Multifunctional 34-key |
| Rated Voltage | 5V |
| Rated Current | ≤10mA |
| Product Dimensions | 5.55 x 4.61 x 0.63 inches (141mm x 117mm x 16mm) |
| Item Weight | 7.8 ounces |
| Connectivity Technology | Micro USB |
| Compatible Devices | Laptop, PC, Tablet |
| Operating System Requirements | Windows XP or later, Mac OS |
| Material | Aluminum, Plastic |

Image: A visual representation of the keypad's dimensions, indicating its compact size.

Image: The underside of the keypad, highlighting its ultra-thin design, four rubber pads for stability, and smooth ABS keycaps.
8. Warranty Information
Levieny products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact customer support. Keep your purchase receipt as proof of purchase for any warranty claims.
9. Customer Support
If you require further assistance or have questions not covered in this manual, please contact Levieny customer support through the following channels:
- Website: Visit the official Levieny website for FAQs and support resources.
- Email: Refer to your product packaging or warranty card for customer service email addresses.
- Online Retailer: For purchase-related inquiries, contact the retailer where you purchased the product.