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Apps like air display or duet let you turn your ipad and/or iphone into an external display for your mac, letting you add a third or even fourth screen in addition to the built-in display and external display(s) connected via dvi/hdmi/mini-displayport/thunderbolt.
How to hook up dual monitors to a pc
With an adapter, the mini displayport can drive displays that feature vga, dvi, or hdmi interfaces.
Have macmini 2014 with two 27" monitors asus pb278 (it has display port)for 1920 x 1080 connect mini display port to dvi or hdmi.
How to hook up dual monitors to a mac mini
Prior to macos sierra it was possible to use a third-party mini displayport to dvi adapter with a mac, but since sierra launched mac users who were reliant on that set up have found their monitors have stopped working with their mac.
The easiest way to find out how many monitors your can connect to your mac is to visit the apple specifications page for your respective mac.
(can i use my 2012 mac pro with an sapphire hd 7950 mac edition video card (two mini displayports) to drive this monitor?
*cable matters gold plated mini displayport (thunderbolt port compatible) to displayport cable in black 6 feet - 4k resolution ready.
Don't sweat if you own a newer mac with a thunderbolt port -- it doubles as a mini displayport as well.
Your display operates at 1920 x 1200 or lower you should use the apple mini displayport to dvi adapter instead.
Mini displayport to dvi adapter has holes for all 24 pins but not the four pins that surround the long pin.
Visit this page, find and select your mac, then look under graphics and video support for number of external monitors supported.
From there, you just buy two "dongles" (display adapters) which hook up to your respective screen input jacks (vga or dvi) and you're set!
Are a few possible reasons why the apple mini displayport to dvi adapter might not be compatible with your monitor.