I want to use my 2009 iMac (with Mini DisplayPort) as an external display for my 2015 MacBook Pro (with Thunderbolt port). What cables will I need in order to do this? The info I‘ve found so far only applies to newer models with a USB-C/Thunderbolt 3 port, so that doesn’t really help with this scenario.
MacBook Pro 13″, 10.14
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.
Use your iMac as a display with target display mode - Apple Support
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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.
Use your iMac as a display with target display mode - Apple Support
.
Display cables needed for models without a USB-C connection
