If we're still talking about the GA-Z170X-UD5 TH, then the only way to get DisplayPort from the 530 is from the Thunderbolt 3 port with a Thunderbolt 3 or USB Type C to DisplayPort adapter. I have tried this in Mac OS X with a Gigabyte Z170X Gaming 7 and it worked but I'm having trouble reproducing my success (the screens go blank now...). I also haven't gotten more than one display to work yet.
http://www.tonymacx86.com/threads/skylake-thunderbolt-3-for-music-production.186733/
Maybe I'll try again using the suggestions at
http://www.tonymacx86.com/threads/b...-imac-15-or-imac-17-system-definition.183113/
If anyone has gotten Intel 530 graphics working with multiple monitors, with another monitor connected to an Nvidia graphics card, with sleep/wake, with hot plug, then I would like to know about it.