The expansion card extends 2 SATA 3.0 interfaces from the native PCI-Ex1 interface, which is backward compatible with SATA 2.0 and SATA 1.0. There are two sets of on the expansion card, you can choose to use the built-in SATA interface or the external eSATA interface. The main control chip is the ASMMEDIA ASM10611 chip, with high-speed transmission, stable and reliable. Thickened baffle high-strength anti-deformation baffle, strong pressure resistance, firm, durable, and not easy to deform. Fast startup, loading and file transfer. Low power consumption, quiet, reliable and durable. SMALL AND PORTABLE: This product is small and light, does not take up space, and can be easily taken . Product name: PCIE to SATA3.0 expansion card Main control chip: ASM1061 Expansion interface: 2 built-in SATA3.0 and 2 external eSATA3.0 (selectable by jumper) Compatibility Compatible: SATA2.0 and SATA1.0 Hot-plug: hot-pluggable SATA device operation System: win7/win8/win10/Vista/xp/2000/2003/Linux/ Working temperature: 0~70 color:Black Material:PCB Package Contents: 1 x Adapter Card 1 x Baffle 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.