The tendency of HDMI connectors to come unseated has always been a problem for portable applications. These innovative HDMI locks allow you to fix the connectors in place on your VZM5 or VZM7 monitors and avoid any uncertainty about the integrity of your signal connection. They also help to prevent the dreaded connector damage that can happen to an HDMI connector when the cable is yanked or bent suddenly. An absolute must for on-the-go shooters. Buy one if you only use the HDMI input or two if you use the input and output.