The HDMI 2.0 matrix 4×2 can connect 4 HD signal sources to 2 HD display terminals with optical fiber or stereo headphone output. The matrix allows four HDMI devices to be switched or split easily to two HDMI compatible monitors or projectors. And any output ports can realize independent audio output by optical fiber or stereo head phone. Our devices offer solutions for noise, space and security concerns, data center control, information distribution, conference room presentation, school and corporate training environments..