Safety: UL Listed. This item has undergone rigorous testing to meet UL (ensuring top-tier electronic safety.) to prevent risks such as overheating, electric shock and short-circuit. The materials used in its construction meet stringent safety and quality standards. It complies with safe manufacturing practices and operational guidelines, ensuring reliability and safety during use. Fit for Lenovo ThinkPad Thunderbolt Universal 3 4 Smart Essential Dock Gen 1 2, Ultra Pro Docking Station, ThinkPad Thunderbolt 3 Dock Gen 2, Thunderbolt 3 Essential Dock Gen 1 2, ThinkPad Thunderbolt 4 WorkStation Dock, ThinkPad Hybrid USB-C with USB-A Dock US, ThinkPad Ultra Docking Station, Thinkpad Pro Docking Station, ThinkPad USB-C Dock Gen 2 ThinkPad USB-C Dock, ThinkVision X1 Gen 1 2 LT2223d Monitor Laptop [Do not buy if your laptop requires more than 6.75A]. Attention: Fit for 135W Charger. Convenient Workspace Setup: Slim design and enough power cable. Perfect for School, home and office, letti