Lenovo GX81Q72385

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Lenovo USI Pen 2 Instruction Manual

Model: GX81Q72385

1. Introduction

The Lenovo USI Pen 2 is a versatile digital stylus designed to enhance your interaction with compatible Chrome OS devices. It offers a fluid and intuitive creative experience, supporting the Universal Stylus Initiative (USI) Protocol for broad compatibility and precise input.

Lenovo USI Pen 2 optimized for Chrome OS, shown with a tablet displaying colorful digital art.

Image: The Lenovo USI Pen 2, optimized for Chrome OS, offers a fluid and intuitive creative experience. It supports the Universal Stylus Initiative (USI) Protocol.

Key Features:

  • Chrome OS Compatibility: Seamless integration with Chrome OS devices.
  • High Pressure Sensitivity: Features 4096 levels of pressure sensitivity for precise control.
  • Magnetic Attachment: Conveniently attaches to compatible devices for secure storage and quick access.
  • Durable Construction: Crafted from aluminum for a premium feel and durability.
  • Replaceable AAAA Battery: Powered by a single AAAA battery (included).

2. Setup

2.1. Battery Installation

The Lenovo USI Pen 2 requires one AAAA battery for operation. A battery is included with your purchase.

  1. Gently twist the top cap of the pen counter-clockwise to open the battery compartment.
  2. Insert one AAAA battery into the compartment, ensuring the positive (+) and negative (-) terminals are correctly aligned as indicated inside the pen.
  3. Replace the top cap by twisting it clockwise until it is securely closed.

2.2. Initial Connection

The Lenovo USI Pen 2 utilizes the Universal Stylus Initiative (USI) protocol, which typically allows for automatic connection with compatible Chrome OS devices. No manual pairing process is usually required.

  • Ensure your Chrome OS device is powered on and updated to ChromeOS 134 or later.
  • Simply bring the pen close to the screen of your compatible device. The device should automatically detect the pen.
  • If the pen does not respond, ensure the battery is correctly installed and charged.

3. Operating the Pen

The Lenovo USI Pen 2 provides a natural writing and drawing experience on your compatible Chrome OS device.

Close-up of a hand holding the Lenovo USI Pen 2, demonstrating its exceptional pressure sensitivity with 4,096 levels for paper-like writing.

Image: The Lenovo USI Pen 2 offers exceptional pressure sensitivity with 4,096 levels, providing a paper-like writing experience.

3.1. Basic Usage

  • Writing and Drawing: Use the pen tip directly on the screen to write, draw, or annotate in supported applications. The 4096 levels of pressure sensitivity allow for varying line thickness and opacity based on how hard you press.
  • Navigation: The pen can also be used for general navigation, tapping, and selecting items on the screen, similar to using your finger.
  • Magnetic Attachment: When not in use, attach the pen to the side of your compatible device for secure storage and easy access.
The Lenovo USI Pen 2 magnetically attached to the side of a laptop, illustrating secure and quick access.

Image: The Lenovo USI Pen 2 features a magnetic attachment for secure and quick access, serving as a portable creative companion.

A person using the Lenovo USI Pen 2 with a laptop on a wooden desk, demonstrating typical usage.

Image: A user operating the Lenovo USI Pen 2 with a compatible laptop, showcasing its practical application.

4. Maintenance

4.1. Battery Replacement

When the pen's performance degrades or it stops responding, it may be time to replace the AAAA battery. Follow the battery installation steps in Section 2.1.

4.2. Cleaning

  • Pen Body: Wipe the pen body with a soft, dry, lint-free cloth. Avoid using harsh chemicals or abrasive materials.
  • Pen Tip: Ensure the pen tip is free from debris. If necessary, gently wipe it with a slightly damp cloth and allow it to dry completely before use. Do not attempt to remove the pen tip unless it is designed for replacement.

4.3. Storage

Store the pen in a cool, dry place. When not in use, attach it magnetically to your compatible device or store it in a protective case to prevent damage to the tip.

5. Troubleshooting

5.1. Pen Not Responding

  • Check Battery: Ensure the AAAA battery is correctly installed and has sufficient charge. Replace the battery if needed.
  • Device Compatibility: Verify that your device is compatible with the USI protocol and meets the minimum ChromeOS version (134 or later).
  • Restart Device: Try restarting your Chrome OS device.
  • Clean Screen: Ensure the device screen is clean and free of smudges or debris that might interfere with pen detection.

5.2. Inaccurate Input or Jitter

  • Clean Pen Tip: Ensure the pen tip is clean.
  • Screen Protector: Some thick or poorly applied screen protectors can affect pen performance. Try removing it temporarily to see if performance improves.
  • Interference: Move away from strong electromagnetic fields that might cause interference.

6. Specifications

Detailed view of the Lenovo USI Pen 2, highlighting its aluminum construction, D pen shape, fine tip, and indicating it includes one AAAA battery.

Image: A detailed breakdown of the Lenovo USI Pen 2, showing its aluminum body, D pen shape, fine tip, and battery type.

Model NumberGX81Q72385
BrandLenovo
MaterialAluminum
ColorGray
Dimensions (LxWxH)15.8 x 0.9 x 0.9 cm (6.20 x 0.37 x 0.37 inches)
Diameter9.5 mm (0.37 inches)
Weight19.3 grams (0.043 lbs)
Pressure Sensitivity4096 Levels
Battery Type1 x AAAA (included)
Minimum OS VersionChromeOS 134
Compatible DevicesTablets, Notebook PCs with USI support
UPC195892109785
Diagram showing the dimensions of the Lenovo USI Pen 2: 6.20 inches (157.6 mm) in length and 0.37 inches (9.5 mm) in diameter, with a weight of 19.3g (0.043 lbs).

Image: Dimensions and weight of the Lenovo USI Pen 2.

7. Compatibility

The Lenovo USI Pen 2 is compatible with touch screen versions of the following Chrome OS models:

Table listing compatible Lenovo Chromebook models for the USI Pen 2, including IdeaPad Duet, Education series, IdeaPad Flex, Lenovo Flex, and ThinkPad C series.

Image: A comprehensive list of compatible Lenovo Chromebook models.

SeriesModelModel NbrMachine Type
IdeaPad Duet SeriesIdeaPad Duet 3 Chromebook 11"11Q72782T6
IdeaPad Duet 5 Chromebook 13.3"13Q7C682QS
IdeaPad Duet ChromebookDuetZA6F
EducationLenovo 300e Gen 4 11.6"300e82W2
Lenovo 500e Yoga Chromebook Gen 4 12.2"500e82W4
Lenovo 500e Yoga Chromebook Gen 4 12.2"500e82W5
IdeaPad Flex SeriesIdeaPad Flex 5 Chromebook 13.3"14IAU782T5
IdeaPad Flex 5 Chromebook (Plus) 14"14IRU783EK
IdeaPad Flex 5 Chromebook 13.3"13ITL682M7
Lenovo Flex SeriesLenovo Flex 5 Chromebook 14"14IAU83AJ
Lenovo Flex5 Chromebook 14"14IAU83AK
ThinkPad C SeriesThinkPad C13 Yoga Gen 1 Chromebook 13.3"C1320UX
ThinkPad C13 Yoga Gen 1 Chromebook 13.3"C1320UY

8. Safety Information

  • Keep the pen away from small children to prevent accidental ingestion of small parts, especially the battery.
  • Do not expose the pen to extreme temperatures, direct sunlight, or liquids.
  • Do not attempt to disassemble or modify the pen, as this may void the warranty and cause damage.
  • Dispose of batteries according to local regulations. Do not dispose of batteries in fire.

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your original purchase or visit the official Lenovo support website. You can typically find support resources, FAQs, and contact information for your region there.

Lenovo Support Website: https://support.lenovo.com

© 2026 Lenovo. All rights reserved.

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