Cable Matters Bi-Directional DisplayPort to Mini DisplayPort Adapter - 6 Inches, DP Male to Mini DP Female Adapter Cable, Not Compatible with Thunderbolt/Thunderbolt 2 Display/Monitor, Not for HDMI

I have tried a number of possible solutions to use an Apple 30-inch Cinema Display with a MacMini M4Pro. One option is a USB-C to DVI-D adapter but hardware control of brightness is not possible.But given I have a Caldigit Thunderbolt 4 dock purchased from the Apple Store that provide a DisplayPort output, I'm able to adapt the DisplayPort output to mini DisplayPort and use an Apple mini DisplayPort to DVI-D adapter. And that combination supports hardware brightness on the 30-inch Apple display.Note I'm still forced to use a third party software application such as MonitorControl to enable the keyboard monitor brightness controls, but I am able to confirm that hardware control is working given power draw of the Apple display.Of note, MonitorControl and friends permit controlling of the display brightness by simply scaling the brightness of the data going to the display but the backlight is not controlled in this case. Longevity and in fact power consumption is a factor if you jack up the backlight to max only to dim via scaling the data going to each pixel. Thus the right answer is to dim the backlight via hardware control.

Perfect. I need to occasionally swap 3 laptops between 2 monitors, and 2 of those laptops have DP only or Mini-DP / HDMI output. 1 of those monitors is auto-sensing input, the other is hard-selected. It's a pain-in-the-butt to have to swap video cables and fuss around in awkward positions to insert cables when I'm swapping devices around.This adapter has effectively eliminated the cable gymnastics of an awkward install setup, so all I need to do is plug this in, between an existing cable and the moved laptop, to simplify certain hardware swaps.I know.. I know.. it doesn't sound that complicated when you read it - how hard is it to move a laptop/s between monitors? But trust me.. "standards" still aren't standardized nearly enough.It's a cheap and effective cable that will save you frustrations.I'm way too old to both with computer frustrations.We should have Star Trek pads and BttF Hoverboards by now!

I purchased this adapter to connect my Apple 27" screen to my Windows PC. Works perfectly!

I have three of these. One had an issue out of the box, and took some wrestling for the mini DP port to connect. Then after a year, either the same one or a different one had a bad connection and I can no longer use it. To be honest it is better to avoid using DP adapters unless you really need to.

Have an old Mac Cinema Monitor at work. Thunderbolt adapters, HDMI adapters, USB-C adapters. Nothing worked except this. Windows PC to Mac Cinema Monitor. Perfection. Love it!

I have a very specific situation some others may also be in. I wanted to connect my 2020 M1 Macbook Air to TWO Apple 24" LED Cinema Displays. Unfortunately, the new M1 Macbooks only drive one monitor. That said, I bought this OWC hub to try it because it had a native Mini Display Port input (which the cinema display has). The OWC worked to drive one monitor, but not two (I was hoping one of the USB-C inputs could drive another monitor with a USB-C / Mini Display Port adaptor but this did not work). After more research, I found a solution with a Plugable brand powered USB hub, model UD-6950Z, bought on Amazon. Along with two Cable Matters DisplayPort to Mini DisplayPort Male to Female Adapters 6", I was able to use both external monitors. Once all hooked up, you have to download the DisplayLink Manager App and set up in the menu bar. Links below. Works like a charm! Plugable rocks!Plugable USB Docking Station: https://www.amazon.com/gp/product/B08B6CZ29Q/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1Link to DisplayLink Manager App: https://plugable.com/blogs/news/plugable-displaylink-products-and-macos-11-big-sur-macos-10-15-catalina-and-macos-10-4-mojaveDisplayLink Manager App installation setup instructions: https://kb.plugable.com/questions/799275How to Connect More External Displays to M1 Macs: https://plugable.com/blogs/news/how-to-connect-more-external-displays-to-apple-silicon-m1-macs

Worked for some old Apple Cinema Displays with no issues. Nice.

It does its job as described with no frills.