HubCOM-880i-RM is a robust, industrial-grade rack-mountable 16-port USB combo hub. HubCOM-880i-RM expands one USB port into eight USB to RS-232 serial ports and eight USB ports. All USB data lines and RS-232 signals are protected by 15kV ESD protection. The HubCOM-880i-RM supports USB2.0 high speed 480Mbps, USB1.1 full speed 12Mbps or USB1.1 low speed 1.5Mbps data transfer rates. It is powered by a high quality industrial-grade switching power supply and provides up to 500mA current to downstream devices For more details on product, Please refer to http://www.papyrus.co.il/rack8usb8rs232hubmetal.htm