STARTECH Mountable 4 Port Rugged Industrial Usb ST4200USBM, 1 - External Ports: USB B (4 pin), Terminal Block (3 Wire), 4 - External Ports: USB Type-A (4 pin) USB 2.0, Humidity: 5 to 95% RH, Ports: 4, Interface: USB 2.0, Bus Type: USB 2.0, USB 2.0, Industry Standards: USB 2.0, Chipset ID: Renesas/NEC - µPD720114, 1 - LED Indicators: Power, Maximum Data Transfer Rate: 480 Mbps, MTBF: 193,317 Hours This TAA compliant 4-port industrial USB 2.0 hub gives you the scalability you need in harsh industrial environments, product and repair labs, conference rooms or office workstations.