Store EDID information for displays Easier to use: External buttons control the programming of an EDID and the protection of the memory inside the unit. Keeps computer systems from deactivating inactive DVI ports. No power required after initial programming step. Custom Resolutions are available for specific devices. Buttons on the outside for EDID programming and write-protection. Use with Gefen DVI extenders to obviate the necessity for DDC CAT-5 lines in computer systems. Supports resolutions up to 1920x1200, 2K, and 3840x2400 (Dual Link).