ISOLATOR FOR VIRGIN - Original Equipment system outlet isolators used to protect your equipment from electrical interference generated on the external Virgin Media network which can affect TiVo and Modem performance while also acting like a circuit breaker to block serious lightning strike damage to your equipment SIGNAL CONDITIONING - These critical devices stops ground hum loops from developing by disconnecting the screen of the incoming cable from the outer of the input connector to your devices. The incoming signal is allowed to jump a tiny gap in the isolator but static generating direct current from the network does not at all ESSENTIAL COMPONENT - Virgin Media installations are simple once the correct components are used.