USB3.1C-LEN supports all the square power adapters of the old Lenovo laptops to USB Type C new laptop charging. Making it great for recycling your old laptop charger in your company or home. USB3.1C-LEN supports the latest USB Type C Power Delivery protocol, automatically recognizes the end device needed power and adapt the voltage and current to best suit the end device charging purpose, range from 5V3A, 9V@3A, 12V@3A, 15V@3A and 20V@3A.