DVI-D Dual link cables / connectors are much higher rated on bandwidth (up to 2560 x 1600 resolution / 1600p) compared to single link which is only rated up to 1920x1200 resolutions. Most graphics cards and displays have DVI Dual link ports. Please check the picture below and compare to your current DVI port on the display or graphics card.

Use this adapter to connect your current HDMI Gaming Console / XBOX 360 / Playstation 3 / BLU-RAY DVD player Video from HDMI to DVI directly to your PC Screen / LCD instead of the TV. An additional HDMI-to-HDMI Cable is needed to connect the adapter.

The converter is bi-directional and can also by used to connect your PC Graphics Card (DVI Output) to the HDMI Port on your HDMI display by using a HDMI-to-HDMI Cable together with this converter. The graphics card output needs to support DVI-D digital signals. Most Nvidia and ATI graphics cards support DVI-I which can autoswitch between DVI-D (Digital) and DVI-A (Analog). To explain the differences in the variations of DVI connectors see the diagram below