4 x 4 HDMI to HDBT Matrix with Audio De-embedder and Bi-directional IR & RS232 Control. It is HDMI 1.4a, supports HD3D, 1080p and it is hDCP compliant. It can be controlled via IR from any of the 4 remote displays to the matrix and offers PoC technology to all receivers. If you need help, please call us on 01372 450 794