Rugged 4-port isolated USB hub delivers 4kV isolation

ACCES I/O PRODUCTS  USB-104-IHUB rugged, industrial-strength 4-port isolated USB hub is small medical/industrial/military grade and provides Tru-Iso signal isolation up to 4kV, extended temperature operation (-40°C to 85°C), high retention USB connectors and an industrial steel enclosure for shock and vibration mitigation. Device makes it easy to expand the number of USB ports and provide up to 4kV isolation between the host computer and connected USB peripherals. Designed to integrate well in any application, the unit is available in a rugged steel enclosure or OEM as a ‘board-only’ device. http://www.accesio.com

Fire and ice abstract lightning background, clash of the elements