The Accell UltraAV 4x4 HDMI Matrix Switch supports up to 4 HDMI A/V inputs and up to 4 HDMI A/V outputs. To send an HD signal to a display select any of the inputs using the included discrete remote control, manual push button or use a RS-232 controller. UltraAV Matrix is HDMI 1.3 compliant and supports all HD video formats including 1080p. It transmits a digital, high-speed signal at up to 6.75 Gbps (225 MHz). The matrix is compatible with Dolby TrueHD and DTS-HD lossless surround sound and supports up to 36-bit deep color providing greater color depth and detailed gradations.