This rca 1 to 3 hdmi port switcher that expands 1 hdmi port into 3 port and carries up to 2160p (4k) video and digital audio signals, able to switch through all 3 of the ports instantly to have access to different medias features this rca switch expands 1 hdmi port into 3 ports carries high-definition video and digital audio signals integrated switch to be able to swap between media sources micro-usb port can be used to connect a usb power adapter or to plug into a spare usb port on your tv/device for power 2160p 4k powered: hdmi connection/ or micro usb