Supports all USB compliant data transfer types as follows; Control / Bulk / Interrupt / Isochronous transfer Supports the following speed data rates as follows: Low-speed (1.5Mbps) / Full-speed (12Mbps) / High-speed (480Mbps) / Super-speed (5Gbps) Compliant with 's eXtensible Host Controller Interface (xHCI) Specification Revision 1.0 Supports USB debugging capability on all super-speed ports Supports USB legacy function. Supports ExpressCardTM Standard Release1.0 Supports 4 downstream ports for all speeds Built-in 15-pin power connector for receiving extra power supply from system Hot-swapping feature allows you to connect/disconnect devices without powering down the system 4 sets of power modules can shield electromagnetic interference to the integrity and stability of data transmission System Requirement ,Linux, OS 10.8 or above Color: Green Material: plastic+metal Package Contents: 1 x PCIex4 to 4 Port Controller 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. PCIE to 4Ports Adapter Card Expansion Card for Windows PCIE Controler Card