Introduction: The HDMI matrix 44 can connect 4 HD signal sources to 4 HD display terminals with optical fiber and stereo headphone output at the same time via HDMI out 1 port. The matrix allows four HDMI devices to be switched or split easily to four HDMI compatible monitors or projectors. This HDMI matrix support lossless transmitting and are widely used in space and security concerns, data center control, information distribution, conference room presentation, school and corporate training environments. Features: * Very compact structure; * Stable and reliable; * Via HDMI out1, support 3.5mm earphone jack and optical output at same time; * Economical and cost-effective; * Support 3D; * Support IR Remote Control; * Support RS232 Control; * The four outputs could show the same or different source simultaneously; Accessories : 1.1 x HDMI Matrix 4X4 (4K-60Hz or 30Hz optical) 2. 1 x IR Remote Control without Battery 3. 1 x 12V power adapter 4. 1 x User Manual Specifications: HDMI resolution .......... up to 4K/60Hz Support video format.......8/10/12 bit deep color Support audio format.. DTS-HD/Dolby-trueHD/LPCM7.1/DTS/Dolby-AC3/DSD Max baud rate ...... 18Gbps Input cable distance.. 4K/30Hz 15M AWG26 HDMI standard cable 4K/60Hz 5M HDMI 2.0 standard cable Output cable distance. 4K/30Hz 15M AWG26 HDMI standard cable 4K/60Hz 5M HDMI 2.0 standard cable HDMI Input... 4 HDMI Output... 4 Max working current...0.8A Power adapter format....Input: AC (50HZ, 60HZ) 100V-240V; Output: DC12V/1A Operating Temperature range .............. (-15 to +45C) Operating Humidity range...5 to 90%RH (No Condensation) Dimension (Lx W x H)...27614326 (mm) Weight...720g Notice: There are 2 options "4K 60Hz" "4K 30Hz", The appearance of the two products is the same, but the maximum supported resolutions are different. Please choose according to your needs and we will send you the options you purchased.