PCI-E 3.0 M.2 M-key to Oculink SFF-8612 SFF-8611 Host Adapter for GPD WIN Max2 External Graphics Card & SSD This convertor only work 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 System requirements: for Linux Kernel 4.3 or above for Windows 8.1/8.1-64/10/10-64 Material: PCB colour: Black Package Contents: 1 x Adapter card narrow version(174 x 47.3mm) 1 x M.2 adapter card 1 x SFF-8611 cable 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.