The card transmits PCI Express 4x signals using the NVMe protocol. ^^ The convertor expands the system by one SFF-8612 interface. ^^ It can be connected e. g. one SSD or Graphics Card by using an optional cable+power. ^^ Supports NVM Express (NVMe) 1.2 ^^ This convertor only work for ThinkBook 16+ Laptop, Not work for 14+ and other laptop.