Umirro Super Speed 4-port USB 3.0 Hub + 1 Charge-Only Port - 5V 2.4A, 12V 2A Power Adapter and 3.3-foot USB 3.0 Cable Included, Latest VIA VL812 Chipset and updated Firmware, Backward Compatible with USB 2.0, 1.1 and Revision 1.0, Supporting Microsoft Windows XP / Vista / 7 /8, Mac OS 9.1 / Mac OS 10.2 or above / Linux

Introduction
This easy plug and play external device is a full featured universal serial bus hub. It allows your computer to connect to USB interfaces joysticks, modems, digital speakers, printers, digital cameras, monitors and many other USB devices.

Important: To achieve maximum performance, your computer system, peripherals, cables, and software must all support USB 3.0. The USB 3.0 4-Port Hub only functions in super-speed mode (5Gbps data rate) when connected to a USB 3.0-compliant host. Otherwise it will operate in high-speed, full-speed or low-speed mode (480 / 12 / 1.5Mbps)

Usage Tips
1. For maximum performance, connected devices should not exceed a combined current of 4.8A. Otherwise, output current may become unstable or disconnect entirely.
2. 2.4 GHz wireless devices, such as wireless keyboards and mouse adapters, may not work in close proximity to USB 3.0 devices or hubs. Connecting to a USB 2.0 port is recommended.
3. Some USB 3.0 devices require a direct connection to host USB 3.0 ports, including some USB 3.0 hard disks.
4. The charging port is designed for charging your mobile devices only and will not support data transfers.
5. To activate the power button, press it once. To turn it off, press it again.