Pretec USB 3.0 All-in-1 Multi-Card Memory Card Reader USB 3.0 SuperSpeed up to 5Gb/s* Fully support all major memory cards: SDXC 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;Mac 10.x; Linux 2.4 and above