Monoprice 6ft 28AWG High Speed HDMI to DVI Adapter Cable w / Ferrite Cores - BlackThis HDMI to DVI Adapter Cable is capable of video performance equivalent to a High Speed HDMI Cable. Ferrite Cores are small magnetic blocks wrapped around the end of a cable. They are used to suppress EMI RFI electronic noise on the cable by absorbing the unwanted high frequencies and dissipating them as very low level heat. This is the simplest and cheapest form of electronic noise reduction and is most effective on small gauge cabling, which is