Can an older Apple monitor (ver 2.1.0) w/mini DisplayPort connector be used with a 2024 M4 Mac Mini?

Apple made two old 27" monitors that people frequently confuse. Although both have physical Mini DisplayPort plugs, they require different types of signals, and different adapters.

• The 27" Apple Cinema Display has a hydra cable with three heads: Mini DisplayPort, USB-A and MagSafe. If what you have is one of these, you want a USB-C to Mini DisplayPort adapter.
• The 27" Apple Thunderbolt Display has a hydra cable with two heads: Thunderbolt and MagSafe. If what you have is one of these, you want an Apple Thunderbolt 3 to 2 adapter.

With a Cinema Display, you probably also want to make a USB connection so you can control brightness.

Please make sure Mini Display Port and Thunderbolt 1/2 sharing the some connector shape.

By looking at the back of the monitor:

a. if it only has 3 USB ports - then you got Cinema Display.

b. If it has 3 USB ports + 1 FireWire 800 + Ethernet port + Thunderbolt 1/2 port ~ then you got a Thunderbolt Display.

After confirming the type of display, it should be easier to guide you the proper adapter for M4 Mac Mini.

Best

If so then:

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