This convertor only works for GPD WIN Max2 Laptop, Maybe not work for 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. Data transfer rate up to 32 Gbps,Supports NVM Express (NVMe) 1.2 Type:2230 Vertical Version Due to different product batches, the appearance may vary, which does not affect the use. Colour:As Shown Material:PC Package Contents: 1 x for OCuLink SFF-8612 female to Key M male Adapter 1 x for Oculink SFF-8611 cable 1 x for OCuLink SFF-8612 female to PCI-E 16x Adapter 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.