Black Box USB-to-USB Isolator - 4-kV, 1-Port - 1 x USB - TAA Compliance SP387A

Isolates up to 4 kV - strong enough for hospital and medical use. USB 1.1 compliant. Includes 1-meter (3.3-ft.) USB cable. Just plug this tiny isolator in line between your PC and a USB device to provide protection from damaging electrical surges, as well as insidious ground loops, which can be especially disruptive in measurement applications.