1. Introduction
Welcome to the user manual for your ASUS Active Stylus Pen, model 90NB0000-P00100. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your stylus pen. Please read this guide thoroughly to ensure optimal performance and longevity of your device.
2. Product Overview
The ASUS Active Stylus Pen is designed to provide a natural and precise writing and drawing experience on compatible touchscreens. Its ergonomic design and advanced pressure sensitivity allow for intuitive interaction with your device.

Figure 2.1: ASUS Active Stylus Pen, silver, with a clip.
3. Features
- Intuitive, Accurate, and Precise: Allows for drawing, writing, or annotating in supported applications with high accuracy.
- Natural, Pen-like Feel: Detects over a thousand minute variations in pressure, providing a responsive and natural writing experience.
- Accurate at Any Angle: Designed to maintain accurate cursor positioning even when the pen is tilted.
- Smooth-flowing Lines and Curves: Features 0.2mm linearity, ensuring that drawn lines appear smooth and consistent.
- Extended Battery Life: Offers up to 10 months of battery life under typical usage conditions.
4. Package Contents
Verify that all items are present in your package:
- ASUS Active Stylus Pen (Model: 90NB0000-P00100)
- Replacement Pen Tip
- AAAA Battery (may be included)
5. Setup
5.1 Battery Installation
- Gently twist the top section of the stylus counter-clockwise to open the battery compartment.
- Insert one AAAA battery with the positive (+) end facing towards the pen tip.
- Align the top section and twist clockwise to securely close the compartment.

Figure 5.1: Close-up of the ASUS Active Stylus Pen, showing the tip and side buttons.
5.2 Initial Use
The ASUS Active Stylus Pen typically does not require manual pairing. Once the battery is installed, it should automatically be detected by compatible Windows 10 devices. Simply touch the pen tip to the screen to begin interaction.
6. Operating Instructions
6.1 Basic Interaction
- Writing/Drawing: Hold the pen as you would a traditional pen and touch the tip to the screen. Apply varying pressure for different line thicknesses or shading effects.
- Selecting: Tap the screen once with the pen tip to select items.
- Right-Click: Press and hold one of the side buttons while tapping the screen to perform a right-click action.
6.2 Pressure Sensitivity
The stylus supports multiple levels of pressure sensitivity. This feature allows for dynamic line control in drawing and writing applications. Lighter pressure typically results in thinner or lighter lines, while heavier pressure produces thicker or darker lines.
6.3 Side Buttons
The ASUS Active Stylus Pen features two programmable side buttons. Their functions may vary depending on the application and device settings. Commonly, these buttons are used for right-click, erase, or other customizable shortcuts.

Figure 6.1: The ASUS Active Stylus Pen in use on a tablet display, demonstrating its functionality for writing or drawing.
7. Maintenance
7.1 Cleaning the Stylus
To clean your stylus, gently wipe the body with a soft, dry, lint-free cloth. Avoid using harsh chemicals, abrasive cleaners, or excessive moisture, as these can damage the pen's finish or internal components.
7.2 Replacing the Pen Tip
Over time, the pen tip may wear down. To replace it:
- Grasp the worn tip firmly with a pair of tweezers or a small tip removal tool (if provided).
- Gently pull the tip straight out from the stylus body.
- Insert a new replacement tip firmly into the stylus until it is seated properly. Do not force the tip.
8. Troubleshooting
- Pen not responding:
- Ensure the AAAA battery is correctly installed and has sufficient charge. Replace the battery if necessary.
- Verify that your device's touchscreen is clean and free of obstructions.
- Confirm that your device is compatible with the ASUS Active Stylus Pen.
- Inaccurate input or erratic behavior:
- Clean your device's screen and the pen tip.
- Restart your device.
- Check for any available driver updates for your device's touchscreen or pen input.
- Buttons not functioning:
- Ensure the pen is properly connected and recognized by your device.
- Check your device's settings for pen button customization.
9. Specifications
| Model Number | 90NB0000-P00100 |
| Brand | ASUS |
| Color | Silver |
| Material | Premium Aluminum Texture |
| Item Weight | 0.15 Pounds (approx. 68 grams) |
| Item Dimensions (L x W x H) | 6.2 x 2.9 x 0.9 inches (approx. 15.7 x 7.4 x 2.3 cm) |
| Compatible Devices | Tablets and 2-in-1 devices with Windows 10 and compatible active stylus support. |
| Battery Type | AAAA (1 required) |
10. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or visit the official ASUS support website. You can typically find drivers, FAQs, and contact information for customer service there.
ASUS Support Website: www.asus.com/support/