I would like to use my 2010 27" iMac as a second screen. What cable do I need to connect the 2020 Thunderbolt port to the 2010 Mini display port? It doesn't seem to exist. Can I just use a Thunderbolt cable?
iMac 27", macOS 10.15
Use your iMac as a display with target display mode - Apple Support
Target Display Mode uses Mini DisplayPort for the 27" 2009 and 2010 iMacs, and Thunderbolt for 2011-2014 iMacs.
To get Mini DisplayPort from a Thunderbolt 3/USB-C port on your 2020 iMac you need a USB-C to Mini DisplayPort cable or adapter, such as:
You'll need a thunderbolt 3 to thunderbolt 2 adapter and a mini display port cable. Use your iMac as a display with target display mode - Apple Support
The 2010 iMac must be running Mac OS 10.13.6 or earlier as later versions do not support target display.
So I need two cables...hmm. What about this one?:
CABLEDECONN USB C To Mini Displayport Cable, USB-C Type c to Mini DisplayPort/Mini DP 4K 60Hz Resolution Active Cable Adapter 6FT with Aluminium Case for Apple New Macbook Pro 2017 Samsung Galaxy S8
Can only suggest the adapter recommended in the article I linked to.
Thanks guys, really appreciate it!
The CABLEDECONN USB-C To Mini DisplayPort Cable should also work.
What cable do I need to connect a 2020 iMac to a 2010 iMac?
