The Lindy High Speed HDMI Female to Female Coupler is designed to extend a pre-installed HDMI cable by attaching two HDMI cables from either end of the Female adapter, perfect for domestic, commercial and educational applications. Please note: The maximum distance and resolution capable will be determined by the quality of the HDMI cables you are using. We recommend our Anthra Line cables for the Maximum resolution of 4K@60hz at a total distance of 5m [e.g 3m in, 2m out], longer distances are possible at a lower resolution such as 1080p.