We specially add a DC power input port to support your high capacity HDD or mobile usb DVD drivers and other situations which may require high electric current. The power input port is a standard 3.5mm DC port, support 5V / 1 A-4 A (the electric current can be 1A, 2A, 3A, 4A or 2.5A and so on), you can buy this kind of 3.5mm standard DC power adapter easily in the market.(We don't supply this adapter in our package.)

Tips:
1. 2.4Ghz wireless devices, such as wireless keyboard 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.
2. For a stable connection, the devices connected to the 4 Ports USB 3.0 Hub must not exceed a combined current of 5 volts 900 mAh. External hard-drives should be connected to an external power source.

Specifications:
Dimentions: 14 * 9 * 4cm
Weight: 120g
Material: Aluminium
Cable length: Approx. 55-60cm
DC power input port: 3.5mm 5V / 1A - 4A

Note: Our products must 100% pass the quality inspection, thus you may find a little slight sign of use. So please be assured for it.

Packing list:
1 * Aluminium USB 3.0 Hub

• With DC power input port to support your high capacity HDD or mobile usb DVD drivers and so on.
• Sleek Apple-style design ideal for Mac Pro, iMac, MacBook Air, MacBook Pro, MacBook, and Mac mini.
• Adds 4 unpowered USB 3.0 ports to your computer - Up to 5Gbps data transfer rate.
• Compatible with all Windows/Mac/Linux systems.
• High grade and unique design and very useful.

With DC power input port to support your high capacity HDD or mobile usb DVD drivers and so on.AGEG