Do both HDMI ports support 4K@60Hz? Alex April 02, 2021 22:10 Updated Follow No. We can confirm that only one HDMI port will support 4K@60Hz while the other will support 4K@30Hz. Related articles Quick Guide and Instructional Manual Does the HDMI port support 4K@60Hz? Will this adapter output video to two external monitors when connected to the new Mac lineup with M1 Processor? Does this support the 2017 MacBook Pro (13" w/o TouchBar)? Description says only 2018-19, but the 2017 model is also Thunderbolt 3. Will this support the Apple USB SuperDrive? Comments 0 comments Please sign in to leave a comment.