Akasa now offers the AK-HB-08BK USB hub out the complete set of USB 3.0 and it has four ports. It allows devices to be connected to the high speed of up to 5 Gb / s benefit, such as external hard drives or fast memory sticks.Features:-- Four port USB 3.0 hub- Plug and play - USB bus powered supporting 1 TB external hard drive and 3 USB flash drives simultaneously- USB 3.0 port backward compatible with USB 2.0Specifcation:-- Application: 4 ports USB 3.0 HUB- Standards: USB 3.0 (USB 2.0 backwards compatible)- Power Mode: USB powered- USB Ports: Type A female USB 3.0 ports (downstream) * 4- Connector: USB 3.0 type AData Transfer Rate:- Up to 5Gb/s - USB 3.0- Up to 480 Mbit/s - USB 2.0