4Kx2K HDMI Matrix Switcher 4 Input 2 Output. Support 4Kx2K @ 30Hz (4:4:4) and 4Kx2K @ 60Hz (4:2:0) with EDID copy from output 1 and RS-232 control. Supported by DC 12v higher voltage reduces the loss of transmission. Manual push button and remote controllable device. Quality control products ensure only the best product is delivered to consumers. Made in Taiwan.