Product Description This 25 foot black SVGA extension cable has a HD15 male and a HD15 female end. The cable features ferrite beads, coaxial construction and double shielding. Its primary use is for extending the length of a computer to computer monitor connection for video display. The ferrite beads/cores are small iron oxide alloy cylinders wrapped around the ends of the cable. They are used to suppress EMI/RFI electronic noise on the cable by absorbing the unwanted high frequencies and dissipating them. The coaxial construction and double shielding work to further suppress noise, delivering you the best picture possible. Our SVGA video extension cables can handle the lowest resolutions used on computer monitors today all the way up to a maximum of 2048 x 1536.