Activating target display mode

Created at: 2021-03-08 11:57:29
Questioner General

Hi, can I activate target display mode via a USB C Hub to HDMI cable and from HDMI cable to a Mini DisplayPort Thunderbolt HDMI adapter?



Description: I've been using a USB C Hub to connect my MacBook Pro 2019 to an external monitor via HDMI - works perfect. I recently got an iMac late 2012 for which I bought a Mini DisplayPort Thunderbolt 2 HDMI adapter to connect the other end of the HDMI cable but this doesn't seem fruitful. Any thoughts on why target display mode is not working? Both devices are running Catalina.

Answer #1:

By: Jordon Feeney

Hi, can I activate target display mode via a USB C Hub to HDMI cable and from HDMI cable to a Mini DisplayPort Thunderbolt HDMI adapter?



Description: I've been using a USB C Hub to connect my MacBook Pro 2019 to an external monitor via HDMI - works perfect. I recently got an iMac late 2012 for which I bought a Mini DisplayPort Thunderbolt 2 HDMI adapter to connect the other end of the HDMI cable but this doesn't seem fruitful. Any thoughts on why target display mode is not working? Both devices are running Catalina.

Answer #2:

By: Eula Predovic

Target display mode requires macOS High Sierra or earlier on the iMac used as the external display. It does not work with macOS Mojave or later.

From: Use your iMac as a display with target display mode - Apple Support

Answer #3:

By: Enid Walter

Target display mode requires macOS High Sierra or earlier on the iMac used as the external display. It does not work with macOS Mojave or later.

From: Use your iMac as a display with target display mode - Apple Support

Answer #4:

By: Eliane Marquardt

Thanks for your quick and helpful response :-) How else can I turn my iMac (without downgrading :-) ) into a secondary display unit. I have used screen share but it does not provide the desired output. Are there options I can explore?



Answer #5:

By: Mallory Dibbert II

You're welcome. Other than downgrading the target iMac to High Sierra I don't know.

Answer #6:

By: Pearline Harris

Okay, I will try this. Thank you so much for your help - highly appreciated. Have a great day!

Answer #7:

By: Ms. Vincenza Koelpin DDS

You're welcome.