Features: This 1080P 2X2 video wall controller,support HDTV or DVI input and 4 HDTV output, main function is to divides a complete HDTV ,DVI images signal into 4 blocks and assign to 4 video display units (such as rear projection unit, LCD TV, etc.). Complete with 4 HDTV video display units to form a large dynamic images wall. Support HDTV and DVI input; Support 4 HDTV output; Output support LED 4:4:4; Support RS232 control; Support 2X2/1X2/2X1 splicing, Support 2X2 automatic splicing function; Easy operation, plugs and play; Specifications: Component:Metal Size:Approx.121x119x19mm/4.76x4.69x0.75inch 3Option Type Output:HDMIx4 Input:HDMIx1,DVIx1 Resolution:1080P/60Hz Power:12V2A Features:Output Support LED 4:4:4;Support Rs232 Control; Support 2x2/1x2/2x1 Splicing, Easy Operations, Plugs and Play;Support 2x2 Automatic Splicing Function; Package Includes: 1pc Video Wall Controller note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.