This convertor only work for ThinkBook 14+ Laptop, Not work for 16+ and other laptop. 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. The card transmits PCI Express 4x signals using the NVMe protocol. Connectors: 1 x OCuLink SFF-8612 female 1 x 67 pin M.2 Key M male Data transfer rate up to 32 Gbps Supports (NVMe) 1.2 System requirements Linux 4.3 or above 8.1/8.1-64/10/10-64 Due to different product batches, the appearance , which does not affect the use Colour:Black Material:PC Package Contents: 1 x OCuLink SFF-8612 female 1 x 67 pin M.2 Key M male Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.