I installed the AOC E1659F portable monitor to my macbook pro, but I am unable to adjust the brightness on the monitor. I downloaded a brightness slider app, but that will only adjust the brightness on my macbook. Is there a software or system preference that I can use to adjust the brightness on the AOC monitor? Thank you!
MacBook Pro 15″, macOS 10.14
Hello and welcome to Apple Support Communities INSHFAP99,
I see that you have a question about adjusting the brightness on your portable monitor. I'd be happy to get you pointed in the right direction.
According to the User Manual, you may need to install DisplayLink macOS Software in order to adjust certain features with this display:
"Mac OS X support can be found at http://www.displaylink.com/mac"
After that, see if you can adjust the brightness using the following steps:
Get help with video issues on external displays connected to your Mac – Apple Support
"Adjust brightness and contrast
To adjust the brightness of your Apple display, press the brightness key 
or F2 key on your keyboard. You can also use the brightness adjustment for each connected display in System Preferences > Displays.
Displays not made by Apple sometimes have brightness and colour adjustments built into the display. Check the documentation for your display to see if it includes built-in controls.
When you connect a display, projector or HDTV using an HDMI cable, you might see a difference in video quality if your display is set to television mode. Check your device for a "monitor mode" setting to achieve the best video quality.
You can also calibrate each display from the Color tab of Displays preferences to get the best color and brightness from your display."
Thank you for using Apple Support Communities.
Hello and welcome to Apple Support Communities INSHFAP99,
I see that you have a question about adjusting the brightness on your portable monitor. I'd be happy to get you pointed in the right direction.
According to the User Manual, you may need to install DisplayLink macOS Software in order to adjust certain features with this display:
"Mac OS X support can be found at http://www.displaylink.com/mac"
After that, see if you can adjust the brightness using the following steps:
Get help with video issues on external displays connected to your Mac – Apple Support
"Adjust brightness and contrast
To adjust the brightness of your Apple display, press the brightness key or F2 key on your keyboard. You can also use the brightness adjustment for each connected display in System Preferences > Displays.
Displays not made by Apple sometimes have brightness and colour adjustments built into the display. Check the documentation for your display to see if it includes built-in controls.
When you connect a display, projector or HDTV using an HDMI cable, you might see a difference in video quality if your display is set to television mode. Check your device for a "monitor mode" setting to achieve the best video quality.
You can also calibrate each display from the Color tab of Displays preferences to get the best color and brightness from your display."
Thank you for using Apple Support Communities.
AOC E1659F portable monitor brightness
