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/M2 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. Can I connect another adapter through the USB-C port on the side? Will this work on the MacBook Air? Comments 0 comments Article is closed for comments.