Do both HDMI ports support 4K@60Hz? Yes. We can confirm that both HDMI ports will support 4K@60Hz. Related articles Quick Guide and Instructional Manual 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 work on the MacBook Air? How long is the cable? Comments 0 comments Article is closed for comments.