Pretec USB 3.0 Multi Reader P240 Model UDB3.0 Super speed up to 5Gb/s Fully support all major memory cards: SDHX UHS/SD/MicroSD/CF/MSXC/MS/M2 Pocket size design with attachable external USB3.0 connector for enhanced convenience Compliant with usb 3.0/2.0 O/S support: Windows 7/Vista/XP : Mac10.x : Linux 2.4 and above