Lenovo provides specific drivers for the two primary Thunderbolt 4 models: Driver & Firmware Main Page Firmware Update Utility (Windows 10/11) PCIe LAN Driver ThinkPad Universal Thunderbolt 4 Smart Dock (40B1): Firmware Update Utility How to Install and Update Your Dock You can update your dock using three primary methods: 1. Manual Installation (Recommended for IT Experts) ThinkPad Universal Thunderbolt 4 Dock - Lenovo Support
To ensure your operates at peak performance, you must install the correct drivers and firmware from official Lenovo sources. Outdated software is the most common cause of flickering screens, USB port failures, and charging issues. Direct Download Links (Official Lenovo Support) thinkpad thunderbolt 4 dock driver download