Connect your Mini Display Port video source to a DVI-D display. The MDP2DVID Mini Display Port to DVI-D Dual-Link adapter lets you connect your Mini Display Port video source (Macbook, Macbook Pro, Macbook Air, etc.) to any DVI-D display, including televisions & Apple Cinema Display HD, eliminating the expense of having to upgrade to a Mini Display Port-capable monitor. The Mini Display Port adapter offers an active conversion, which is powered by a single USB (Universal Serial Bus) port & is able to handle full dual-link resolutions (up to 2560x 1600). Use it to mirror your display to another monitor, or extend your desktop to increase your workspace.