MacBook Pro
You can check Macs that support 4K display on the official page.
4K Display - iiyama 4K Ultra HD (ProLite B2888UHSU)
I connected iiyama 4K Ultra HD (ProLite B2888UHSU) to MacBook Pro.
Audio Cable USB Cable Mini DisplayPort Cable DisplayPort Cable DVI-D Cable Power Cord VGA (D-sub) Cable HDMI Cable Safety & Quick Start Guide/Warranty
DVI HDMI-2 HDMI-1 DP-2 DP-1 VGA USB
DisplayPort settings
Only DisplayPort supports 60Hz refresh rate, so connect DisplayPort to MacBook. However, even if you connect DisplayPort and MacBook as it is, it will not be displayed properly, so first set DisplayPort. You can’t set DisplayPort unless something is projected on the display, so prepare the included HDMI cable. Next, prepare the included mini DisplayPort cable and connect it to the Thunderbolt port on the left side of your MacBook.
Resolution setting
By default, the resolution is set to 4K (3840 x 2160).
