The portable hub Plugable® to 4 USB 3.0 bus powered (VIA VL812 Rev B2 v9091 chipset with firmware supports Windows, Mac OS X and Linux, along with full backward compatibility with USB 2.0) (Personal Computers)
The number of connectors USB3 port is often still limited to 2 on many PCs, while others last usb2 but the number of devices USB3 is becoming higher (external HDD, Blu-ray burner, key (s) USB) HUB this avoids having to constantly plug / unplug the US
