Touchpad Lenovo Board CS21 3+2bCP GL-Mylar VB1 CHY 5M11G56166 — replacement laptop touchpad module

Replacement touchpad module for Lenovo laptops, model Board CS21 3+2bCP GL-Mylar VB1 CHY. This original spare part restores the touch-sensitive surface and built-in click mechanism on compatible Lenovo notebook models. It is intended for replacing a damaged or non-responsive touchpad to bring back cursor control and multi-touch gesture support where applicable.

Advantages

The module is designed as a direct-fit replacement, matching the original touchpad dimensions and connector placement for straightforward installation. It provides a uniform touch surface and consistent click response, helping to recover precise pointer movement and reliable tapping. As an OEM-pattern component, it supports the same mechanical and electrical interface used in the original assembly.

Suitable for

• Repair shops performing Lenovo laptop keypad and input system repairs
• DIY laptop maintenance and component-level replacement
• Restoring touchpad function after physical damage or liquid exposure
• Replacing worn or unresponsive touch-sensitive controls

Key specifications

• Function: touch-sensitive input surface with integrated mechanical click mechanism
• Interface: board-level connector compatible with specified Lenovo notebook mainboard layout
• Surface material: mylar-coated touch surface for durability and glide
• Form factor: compact replacement module sized for the corresponding laptop chassis
• Compatibility: designed to match the original hardware dimensions and mounting points

How to use

Power down the laptop, disconnect the battery if accessible, and open the chassis following the manufacturer's service instructions. Remove the faulty touchpad module by disconnecting its board-level cable and unscrewing any retaining fasteners. Install the replacement module by aligning it with the mounting points, securing screws, and reconnecting the cable. Reassemble the laptop, reconnect the battery and power up to verify touch response and click functionality. If drivers or firmware are required, install Lenovo's recommended input device drivers.

Recommendations

Handle the touchpad module by its edges and avoid touching electronic contacts. Use antistatic precautions during installation. Test functionality before full reassembly and keep original fasteners and shims for correct alignment. For persistent issues after replacement, verify cable seating and update input drivers or firmware as needed.