GZSHUNLI Specification: Type: PCI-E Riser Model Number: Docking Expansion Card Chip: ASM1166 Data transmission speed: 16000 (MB/s) Hard disk support: Hard disk that supports the SATA protocol Supported systems: for OS//Linux Speed: SATA3 (6G) Total underlying bandwidth 16G Number of branching connectors: one driven by six note: The factory batches are different. If the appearance is slightly different, it does not affect the use. If you mind, please be careful. Material: plastic colour: Black Package Contents: 1 x Computer Expansion Card 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.