1. High grade aluminum alloy material, Unique design and portable.
2. 4x USB 3.0 Ports, High Speed, Up to 5Gbps, 4X faster than usb 2.0.
3. Compatiable with multiple system, no need driver for macbook, PC, Laptop...
4. With Blue led indicator for the working status.
5. Output current: 5V 900mAh, can be charging for the cellphone and smart usb devices.