Touchpad Lenovo Board CS21 3+2bCP GL-Mylar VB1 (MPN: 5M11G56168)

Replacement touchpad assembly for Lenovo laptops, model CS21 3+2bCP GL-Mylar VB1. This OEM-compatible unit provides the touch-sensitive surface, integrated click mechanism and supporting PCB required to restore cursor control and multi-touch gesture functionality in compatible Lenovo notebook models. The module is intended for repair or refurbishment and matches the original form factor and connector layout for straightforward installation when used with the correct chassis and mounting hardware.

Advantages

The assembly delivers a precise capacitive touch surface and mechanical click response similar to the original component, enabling accurate pointer control and gesture recognition. As an OEM-grade replacement, it is built to fit the original mounting points and interface, reducing the need for adaptors or modifications. The integrated PCB and flex cable ensure signal integrity and reliable communication with the laptop mainboard.

Suitable for

• Repairing Lenovo laptops with a compatible CS21-series touchpad form factor
• Refurbishment of used notebooks to restore touchpad and click functionality
• Replacement of damaged or unresponsive touch-sensitive surfaces and click mechanisms
• Service centres performing component-level maintenance on Lenovo notebooks

Key specifications

• Type: Integrated touchpad assembly with PCB and flex cable
• Touch technology: Capacitive multi-touch surface supporting basic gestures
• Mechanical interface: Built-in click mechanism and mounting points compatible with original chassis
• Connector: Flexible flat cable to mate with the laptop mainboard (original connector shape and pinout)
• Compatibility: Designed to match form factor and electrical interface of compatible Lenovo notebooks

How to use

Power down the laptop, disconnect the battery and open the chassis according to the manufacturer service manual. Remove the faulty touchpad assembly by detaching the flex cable from the mainboard and unscrewing mounting hardware. Install the replacement assembly in the original position, secure all screws, connect the flex cable ensuring correct orientation, and reassemble the laptop. Reconnect the battery and power on the device to verify driver recognition and touchpad functionality. If necessary, install or update the official Lenovo touchpad drivers through the operating system or Lenovo support site.

Recommendations

Handle the touchpad assembly by its edges, avoid touching exposed circuitry and flex cable contacts, and use appropriate ESD protection during installation. Follow the laptop’s service manual for disassembly and reassembly steps to prevent damage to surrounding components.