Monoprice 4ft 28AWG High Speed HDMI Cable with Ferrite Cores - Black - 4 ft HDMI A/V Cable for Audio Device, Video Device, Gaming Console, Blu-ray Player - First End: 1 x HDMI Digital Audio/Video - Male - Second End: 1 x HDMI Digital Audio/Video - Male -

4ft 28AWG High Speed HDMI® Cable w/Ferrite Cores - Black

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 inherently more susceptible to electronic noise interference than thicker cables.