Each one of the two HDMI receivers connects two HDMI A Male to A Male cables to extend the total length of the HDMI signal. Compatible with HDMI 1.4, this pack of couplers is ideal for extended reach when connecting laptops, digital cameras, or other HDMI-enabled devices to TVs, displays, A/V receivers, and more. The couplers support resolution up to 3840 x 2160 at 30 Hz, and feature gold-plated connectors for cleaner transmission and corrosion resistance.