Ground Loop Isolators
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StarTech.com USB Galvanic Isolator, Up To 6KV, Electrical Noise Isolator, IP40, DIN Rail Mount, Isolated Power Filter, USB 2.0/1.1, 5V/250mA, Plug-and-Play, TAA, 5 V, 8 kV, 15 kV, 6 kV, 12 MB/s, BlackIn stock£61.49