1. This product supports USB association 2. The item expands 2 USB 3.0 and XQD/CF/SD/TF card read by USB3.0 3. The product conforms to USB 3.0 specification and is downward compatible with USB2.0/1.1 standard 4. Support Win XP,7,8,10,Vista,Linux,Mac OS and other systems 5. Driver-free installation, easy to use,plug and play 6. Low power consumption and low heating temperature