Connect 24-inch LED Cinema Display to iMac M4 Thunderbolt 4

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Level 1

4 points

Connect 24-inch LED Cinema Display to iMac M4 Thunderbolt 4

Hi all, I have a new iMac M4 with 4 Thunderbolt 4 ports. I'd like to connect my trusty 24-inch LED Cinema Display (A1267) which has a 3-head connector bundle: minidisplay port/USB-A/magsafe. I have an Apple Thunderbolt 2 (minidisplay port) to Thunderbolt 3 (USB-C) adapter (type A1790), but on connection the Cinema isn't recognised at all by the iMac. I'd welcome any advice about how to proceed. I've searched the Community for similar issues but not found this exact combination. Thank you! -- Toby

iMac 24″, macOS 15.2

Posted on Jan 29, 2025 7:03 AM

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Answer 1

Top-ranking reply

Malcolm J. Rayfield

Level 7

23,095 points

Jan 29, 2025 9:58 PM in response to gakochan

The Apple Thunderbolt adapter is for Thunderbolt displays and will not work with Mini DisplayPort displays, even though the plugs will fit.

You need a USB-C to Mini DisplayPort adapter, such as: https://www.startech.com/display-video-adapters/cdp2mdp

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Answer 2

samtenor

Level 4

2,074 points

Jan 29, 2025 10:50 AM in response to gakochan

Has the cable frayed? Any bad connection with newer Macs/MacOS would not cooperate with the displays.

Even it would work on the older models, but just not the newer Macs.

Unfortunately, unlike TB display - you have no other additional connection to fall back.

There is one Hun - gears for Mini-Display port (purely up to you).

OWC TB3 Hub - it has a mini-display port with few USB ports at your disposal.

You can just omit the magsafe portion.

Best

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Answer 3

gakochan Author

Level 1

4 points

Jan 29, 2025 11:17 AM in response to samtenor

Thanks samtenor – no the adapter appears to be in good condition, no signs of wear or damage. Although I did buy it second-hand. I have no way of testing it though! Thanks or the hub suggestion.

best wishes

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Answer 4

gakochan Author

Level 1

4 points

Jan 30, 2025 12:03 AM in response to Malcolm J. Rayfield

Thaks a lot Malcolm. I'll try that and report back! best wishes.

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Connect 24-inch LED Cinema Display to iMac M4 Thunderbolt 4

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