Mountable USB 2.0 Metal Hub - 4 Ports StarTech.com ID: ST4200USBM This hub is built strong and ideal for industrial environments. With the StarTech.com ST4200USBM 4-port hub, you can wall-mount or install onto a DIN rail for convenient access to the ports. This four port industrial hub can be bus powered or self powered with a three wire terminal block connector (7-24V). Plug in your most demanding next-generation peripherals and still enjoy data transfer speeds of up to 480 Mbps. And since the ST4200USBM is backwards-compatible with USB 1.1 specifications, your less demanding peripherals will still function perfectly with no adjustments.