Kramer VS-401USB
The VS-401USB 4×1 USB 2.0 Switcher is a high-quality 4×1 USB switcher. It accepts up to four USB devices and switches the selected device to the host.
High-Speed USB version 2.0
Flexible Control Options via front panel buttons, RS−232 & IR remote (included)
Firmware upgrade via RS−232 using K−UPLOAD application software
3 units can be rack mounted side−by−side in a 1U rack space with the optional RK−3T rack adapter