Satechi Card Reader ST-3HCRS, Port 3 x SuperSpeed USB 3.0, Compliant Standards USB 1.1, USB 2.0, USB 3.0, microSD card reader, SD card reader, Interfaces 3 x USB 3.0 Type A, Expansion Slots 1 (total) / 1 (free) x microSD/ 1 (total) / 1 (free) x SD Memory Card, Silver, 1 x SuperSpeed USB cable, Apple MacOS X, Microsoft Windows 2000/ME/XP/Vista/7/8/10. The Satechi Aluminum USB 3.0 Hub and Card Reader adds three USB ports and two card reader slots to your computer. This allows you to connect and use USB devices such as digital cameras, external hard drives, flash drives, and printers.