HUB-1230i is a robust, industrial-grade 12-port USB2.0 hub. HUB-1230i expands one USB port into 12 USB3.0 ports. The HUB-1230i supports USB3.0 5Gbps (super-speed) USB2.0 480Mbps (high speed) 12Mbps (full speed) and USB1.1 1.5Mbps (low speed) data rates. It is powered by a high quality industrial-grade switching power supply and provides up to 900mA current to downstream devices For more details on product, Please refer to http://www.papyrus.co.il/12usb30hubmetal.htm