1. Introduction
This manual provides essential information for the installation, usage, and maintenance of your Mingxiong USI Pen 2 Nib Replacement. Please read these instructions carefully to ensure proper function and longevity of the product.
2. Compatibility
This replacement nib is specifically designed for the Lenovo USI Pen 2. It is not compatible with the original Lenovo USI Pen or any other stylus models. Verify your stylus model before proceeding with installation.

Figure 2.1: Visual guide for identifying the compatible Lenovo USI Pen 2. Ensure your stylus matches the 'USI Pen 2' indicated with a green checkmark.
3. Package Contents
The package contains the following item:
- 1 x Mingxiong USI Pen 2 Replacement Nib
4. Installation
Follow these steps to replace the nib on your Lenovo USI Pen 2:
- Gently pull the old nib straight out from the stylus body. Avoid twisting or bending the nib during removal.
- Align the new Mingxiong replacement nib with the opening on the stylus.
- Carefully push the new nib straight into the stylus until it is securely seated. Do not force the nib.

Figure 4.1: Step-by-step visual guide for replacing the stylus nib. The old nib is pulled out, and the new nib is pushed in.
5. Usage
The Mingxiong USI Pen 2 Nib Replacement is designed to provide a smooth and natural writing and drawing experience. It supports 4096 levels of pressure sensitivity, allowing for precise control over line thickness and shading, similar to the original nib.

Figure 5.1: The replacement nib in use on a tablet, illustrating its smooth drawing capability and pressure sensitivity.
6. Maintenance
To ensure the longevity and optimal performance of your replacement nib:
- Keep the nib clean and free from dust or debris. Use a soft, dry cloth for cleaning.
- Avoid applying excessive force when writing or drawing, as this can accelerate wear.
- Store the stylus in a protective case when not in use to prevent accidental damage to the nib.
- The fine rubber tip is designed to be wear-resistant and should not scratch your screen protector.

Figure 6.1: The replacement nib is designed for durability and wear resistance, contributing to a long lifespan.
7. Specifications
| Feature | Detail |
|---|---|
| Product Name | USI Pen 2 Nib Replacement |
| Brand | Mingxiong |
| Compatibility | Lenovo USI Pen 2 (Not for Lenovo USI Pen) |
| Pressure Sensitivity | 4096 levels |
| Material | Plastic (Fine rubber tip) |
| Color | Black |
| Item Weight | 3 Grams (0.106 ounces) |
| Product Dimensions (L x W x H) | 0.39 x 0.39 x 0.39 inches |

Figure 7.1: The replacement nib is engineered for high precision and a smooth, natural feel.
8. Troubleshooting
- Nib not recognized or not working: Ensure the nib is fully inserted into the stylus. If the issue persists, remove and reinsert the nib. Verify that your stylus is a Lenovo USI Pen 2.
- Inconsistent pressure sensitivity: Check for any debris around the nib or inside the stylus tip opening. Ensure the nib is clean and properly seated.
- Nib feels loose: Confirm the nib is pushed in completely. If it continues to feel loose, it may indicate wear on the stylus's internal mechanism or the nib itself.
9. Warranty and Support
For information regarding warranty coverage or technical support, please refer to the product's original purchase documentation or contact the retailer/manufacturer directly. Keep your purchase receipt for warranty claims.