The HDMI line supports the data transmission rate of 5Gbps, which can be transmitted at a maximum of 30 meters, enough to cope with a 1080p video and a 8 channel audio signal. And because a 1080p video and a 8 channel audio signal need less than 4GB/s, the HDMI line has a lot of remainder. This allows it to connect the DVD player, the receiver and the PRR with a single cable. In addition, HDMI supports EDID and DDC2B. Therefore, devices with HDMI have the feature of plug and play, and automatic negotiation between signal source and display device will automatically select the most suitable video / audio format.