Q: How to adjust the brightness of a second display connected to iMAC 2012 by Apple Mini DisplayPort to Dual-Link DVI Adapter?

How to adjust the brightness of a second display (Dell 3007WFPHC 2560x1600 dpi) connected to 27 inch iMAC 2012 through thunderbolt port by an Apple Mini Display Port to Dual-Link DVI Adapter?

iMac, OS X Mavericks (10.9.3), Mini Display Port

Posted on May 16, 2014 3:22 AM

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Q: How to adjust the brightness of a second display connected to iMAC 2012 by Apple Mini DisplayPort to Dual-Link DVI Adapter?

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by Malcolm J. Rayfield,

Malcolm J. Rayfield May 16, 2014 10:19 AM in response to shebek
Level 5 (7,945 points)

May 16, 2014 10:19 AM in response to shebek

Macs control computer by USB. With a non-Apple display, you will have to use the brightness control on the display.
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Q: How to adjust the brightness of a second display connected to iMAC 2012 by Apple Mini DisplayPort to Dual-Link DVI Adapter?

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by Malcolm J. Rayfield,

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