The 4x1 hdmi switch can support four HDMI ports by remote control or manual button to switch to a display terminal.The HDMI switch can support all hd formats including 720p, 1080i, 1080p multichannel audio.This product comes with two digital audio outputs(optical fiber and coaxial) and one 3.5 mm headphone output all the way, so it is more suitable for home theater systems