Octava-4 x 4 HDMI Matrix Switch with Digital Audio Output(44UHDMX) 4 HDMI inputs, 4 HDMI outputs with 1 Digital Audio Output for Audio Integration Fast Switching-Matrix allows 256 viewing combination Supports high resolution video 480p, 720i/p, 1080i/p EDID Management , USB service port for customization needs. 1 RU rack mount, remote control included