SIIG 7-Port Industrial USB 3.0 Hub with 15KV ESD Protection (ID-US0511-S1) Industrial grade rugged metal housing enclosure design to withstand harsh industrial environments - See more at: http://www.siig.com/7-port-industrial-usb-3-0-hub-with-15kv-esd-protection.html#sthash.Rr0skvs5.dpuf Redundant 9VDC to 24VDC power input 15KV ESD USB interface protection Power input surge protection (600W) for each port Over-current detection and protection circuit design Wall and DIN rail mount support