This Black DVI-D cable will extend an existing dual link DVI-D cable. Connect your computer to your monitor or HDTV and enjoy high definition resolution with this DVI (Digital Video Interface) cable. Single link DVI cables are capable of resolutions of 1920 x 1200 which will cover 1080p - enough to satisfy most HD fans. For even higher resolutions, dual-link DVI cables can support up to 2560 x 1600. DVI has superseded the  signal carrying VGA type cables for some manufacturers. While its video resolutions are similar to HDMI, it should be noted that DVI cables carry a video signal only unlike the former which also supports surround sound audio. Please note: The maximum recommended length of a DVI cable is 5 meters, longer lengths will require an amplifier