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What cable should I use to connect my Mac Mini 2018 to iMac 27" late 2009 in target display mode?

I recently bought a new Mac Mini 2018 and I want to use my old iMac 27" late 2009 as the display.

Since there is no Thunderbolt or Mini DisplayPort on the new Mac Mini. So what cable or adapter combination should I use to connect to the iMac?

  1. Mini DisplayPort to Mini Display Port Cable + Adapter: Mini Display Port (Female) to USB-C
  2. Adapter: Mini DisplayPort to HDMI + HDMI to HDMI Cable

Posted on Jun 11, 2019 3:10 AM

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Posted on Jun 11, 2019 11:47 PM

Thunderbolt adapters don't work for non-Thunderbolt displays.

About the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter - Apple Support

"This adapter is not compatible with displays that use DisplayPort or Mini DisplayPort"


You need a 4K 60 Hz USB-C to Mini DisplayPort cable.

https://www.startech.com/AV/display-and-video-adapters/usb-c-video-adapters/usb-c-mini-displayport-cable~CDP2MDPMM1MB

https://www.startech.com/AV/display-and-video-adapters/usb-c-video-adapters/usb-c-mini-displayport-cable~CDP2MDPMM6B

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What cable should I use to connect my Mac Mini 2018 to iMac 27" late 2009 in target display mode?

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