Does the MARS X support HDMI LOOP OUT? Hollyland Tech December 25, 2020 09:47 Updated No, it has only one HDMI IN interface and works with smartphones or tablets. Related articles Where can I find the Wi-Fi password for the device? How many mobile device are supported for the the MARS X at the same time? How to connect the MARS X to APP? How do i switch to another wireless frequency channel? Does the MARS X support 1080i video input? Comments 0 comments Article is closed for comments.