What is the max resolution/refresh rate that the HDMI port is capable of? John June 18, 2018 10:38 Updated Follow A. The max resolution that the Pro Hub with Ethernet HDMI's port is 4K at 30Hz. Related articles What is the speed of the Ethernet port on the Type-C Pro Hub with Ethernet? Fixing Ethernet Issues Will this Type-C Multimedia Adapter support 1440p @ 60hz if you are using two monitors? What is the max pass-through wattage for the Type-C Port? Can the Type-C port be used to output video or data transfer? Comments 0 comments Please sign in to leave a comment.