Specifically designed for Canon 5D MKIII. Fast Installation Does not require use of 5D’s ¼-20 mounting point (unlike all other protectors) Does not block other ports on 5D Incredibly light weight < 1oz Protects HDMI port from every angle (left, right, up, down, in & out) Protects from bumps/knocks on the connector Protects from harsh cable tugs Locks HDMI cable in place (Keeps monitor from losing signal) Locks USB cable in place Designed specifically for use with SmallHD mini-HDMI cable (INCLUDED) FREE SmallHD mini-HDMI cable This product can not be used while using the Canon battery grip.