Is there a Thunderbolt 2 to Thunderbolt 3 adapter so male thunderbolt 2 to a female thunderbolt 3 or usb-c to connect a USB-C/Thunderbolt 3 male device to an older Macbook, MacMini, iMac that only has Thunderbolt 2 ports?

Hi currterr

Welcome to the Apple Community

Not sure if this could be helpful ...

Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter - Apple

 Seems this is a bidirectional adapter

says you can connect new Thunderbolt 3 devices to a Mac with a Thunderbolt or Thunderbolt 2 port and macOS Sierra or later.

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

says:

This adapter is bidirectional, which means you can use it to connect Thunderbolt 3 devices to a Mac that has a Thunderbolt or Thunderbolt 2 port. In that case, the Mac must be using macOS Sierra or later, and the device using Thunderbolt 3 must provide its own power.

Maybe it is the adapter you have already ?

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In the past, have relied on advice freely available at most Electronics stores (eg JayCar) for difficult-to find adapters etc.

All the best :-)

You're welcome :-) Thank you for your reply. Glad you have a solution.

Cheers :-)

BTW: Discovered quite a discussion over how the bidirectional adapter could work by using it with an extra cable:.

https://apple.stackexchange.com/questions/278078/is-thunderbolt-2-to-thunderbolt-3-type-c-possible