Specification:

1. Brand: Wavlink
2. Model: WL-UH3049
3. Material: Aluminum
4. Interface: 4 * USB3.0 
5. Speed: 5Gbps
6. Power adapter: US Plug / UK Plug / EU Plug
7. Dimension: 6.3 x 6.1 x 2.6 inches
8. Supported systems: Windows XP / Vista / 7 / 8 / 10, MacOS 9.1 and above, or Linux. 
9. Power: 5V/4A, 20W.

Features:

1. Aluminum alloy body with frosted craft charcoal gray, 4 USB3.0 ports, super speed up to 5Gbps, 10x faster than USB2.0, backward compatible with USB 2.0 / 1.1.
2. Support fast charging (max.2.4A) provided by DC 5V / 4A power adapter.
3. Blue LED indicates power status for each port
4. Build in surge protector in each port keeps your devices and data safe. 3rd-Generation of VL812 USB3.0 controller built inside, fully-integrated, lower-power use.

Package included:

1 * Wavlink WL-UH3049 Super Speed 4-Port USB3.0 Aluminum Hub with Fast Charging
1 * 80 cm USB cable,
1 * 20W (5V / 4A) power adapter