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Burnsey2

macrumors newbie
Original poster
Jan 5, 2022
10
9
My 30 inch cinema display is model number A1083.

Are all of them the same model number? Or does the 2007 refreshed model have a different model number?

How can I tell if I have the refreshed model?

Thanks
 
Locate its serial number on the back of the case and decode it or extract the EDID using e.g. SwitchResX. Download, install and open it. Select the Cinema Display in the left part of the SwitchResX window. There should be a button labelled “Export EDID” in the right part of the window. This creates a text file with the EDID in your Documents folder. Open that file in TextEdit and look for the following section (I've blanked some of my display's data):

Code:
-----------------------------------------------------
------------------- MAIN EDID BLOCK -----------------
-----------------------------------------------------

    EDID Version........1.4
    Manufacturer........XXX (XXXX)
    Product ID..........XXXXX (XXXX)
    Serial Number.......XXXXXXXX

    Manufactured........Week 18 of year 2019

The Manufactured line is what you're looking for.
 
Last edited:
Older models have product ID 37426 (9232) and HDCP not supported (2004 to 2007?)
Newer models have product ID 37409 (9221) and HDCP supported (2007 to 2010?)

I don't think I've seen documentation mentioning different models of the 30" display. Do you have links for the 2007 refresh info?
I didn't notice until recently (when I discovered differences in the EDIDs of the displays from other people) that there were different models of the 30" display.

The wikipedia page at https://en.wikipedia.org/wiki/Apple_Cinema_Display does say this:
On August 7, 2006 the Aluminium Cinema displays had a silent upgrade that boosted the brightness and contrast ratios to 300/400 cd/m2 and 700:1.
Maybe this is when the product ID and HDCP support changed? Or maybe not. One person has a display from week 32 of 2006 (Aug. 7, 2006 to Aug. 13, 2006) with the old product ID and HDCP disabled.
https://forums.macrumors.com/thread...-on-mac-pro-yes-you-can.2309750/post-30713434
According to https://github.com/linuxhw/EDID/blob/master/Digital/Apple/APP9232 , the old model was made up to at least week 13 of 2007.
According to https://github.com/linuxhw/EDID/tree/master/Digital/Apple/APP9221 , the new model began as early as week 17 of 2007.
 
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Locate its serial number on the back of the case and decode it or extract the EDID using e.g. SwitchResX. Download, install and open it. Select the Cinema Display in the left part of the SwitchResX window. There should be a button labelled “Export EDID” in the right part of the window. This creates a text file with the EDID in your Documents folder. Open that file in TextEdit and look for the following section (I've blanked some of my display's data):

Code:
-----------------------------------------------------
------------------- MAIN EDID BLOCK -----------------
-----------------------------------------------------

    EDID Version........1.4
    Manufacturer........XXX (XXXX)
    Product ID..........XXXXX (XXXX)
    Serial Number.......XXXXXXXX

    Manufactured........Week 18 of year 2019

The Manufactured line is what you're looking for.

Thank you, very helpful.
 
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Reactions: Amethyst1
Older models have product ID 37426 (9232) and HDCP not supported (2004 to 2007?)
Newer models have product ID 37409 (9221) and HDCP supported (2007 to 2010?)

I don't think I've seen documentation mentioning different models of the 30" display. Do you have links for the 2007 refresh info?
I didn't notice until recently (when I discovered differences in the EDIDs of the displays from other people) that there were different models of the 30" display.

The wikipedia page at https://en.wikipedia.org/wiki/Apple_Cinema_Display does say this:
On August 7, 2006 the Aluminium Cinema displays had a silent upgrade that boosted the brightness and contrast ratios to 300/400 cd/m2 and 700:1.
Maybe this is when the product ID and HDCP support changed? Or maybe not. One person has a display from week 32 of 2006 (Aug. 7, 2006 to Aug. 13, 2006) with the old product ID and HDCP disabled.
https://forums.macrumors.com/thread...-on-mac-pro-yes-you-can.2309750/post-30713434
According to https://github.com/linuxhw/EDID/blob/master/Digital/Apple/APP9232 , the old model was made up to at least week 13 of 2007.
According to https://github.com/linuxhw/EDID/tree/master/Digital/Apple/APP9221 , the new model began as early as week 17 of 2007.

The 30 inch Cinema display released in 2004 was indeed refreshed in 2007 with higher brightness and contrast specs, and support for HDCP.

It appears the model number for all of them remained the same.
 
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The 30 inch Cinema display released in 2004 was indeed refreshed in 2007 with higher brightness and contrast specs, and support for HDCP.

It appears the model number for all of them remained the same.
The excellent MacTracker app (Mac App Store, developer site) shows these dates for the two models:

Cinema Display (30-inch DVI): June 2004 to March 2006
Cinema Display (30-inch DVI Late 2005): March 2006 to July 2010

Apple's website has the press release announcing the original model, dated June 28, 2004.

If there's a corresponding press release for the later model, I couldn't find it.

Mine shows this in the EDID file I exported using SwitchResX:
Product ID..........37408 (9220) Manufactured........Week 47 of year 2004
 
It's quite an old thread, but just got hold of 3 ACD 30" which I have run through SwitchresX.
The oldest being from week 31 of 2007. Supports HDCP, as do the other two.
Product ID..........37409 (9221) on all of them.

Currently waiting for a couple of Club3D USBC adapters, with HDCP ON (CAC-1510). Fingers crossed it'll work! Will update once they arrive.

Sidenote: Absolutely love the monitors so far. Have them hooked up to my old MBP Late '13. Can't wait till I get the adapters so that I can hook them up to my MBP14 M1Pro.
 
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The oldest being from week 31 of 2007. Supports HDCP, as do the other two.

I ended up here trying to figure out if I had the early or later model. If I couldn't find the answer online, my plan was to:
  1. Install Windows 10 using Boot Camp on my old MacBook Air,
  2. Install the Club 3D firmware flasher utility in Windows,
  3. Flash the adapter to support HDCP, and
  4. Test with Disney or Netflix in Safari.
Instead, following the above advice of Amethyst1, all I had to do was install SwitchResX and export the EDID file, where it clearly shows HDCP is not supported.

So while I'm disappointed to find out my 30-inch Apple Cinema Display does not support HDCP, I'm glad I didn't have to waste all that time and effort, only to be disappointed in the end.

And now I know why most streaming services don't want to play in Safari on my MacBook Pro, even on the built-in Retina display. (I get sound, but no picture.) The only way I can get it to work is to physically unplug the Cinema Display.

Curiously, some will work in Chrome, even on the Cinema Display. Why the browser makes any difference at all is a mystery to me.

(There's no need to feel sorry for me — I can watch streaming content on the TV in my den, which is connected to an Apple TV box.)
 
This info has been very helpful to me! I have 3 of these wonderful Apple 30 inch Cinema monitors and I am now attempting to run them with my new Mac Studio M2 Max. I installed and ran the SwitchResX which quickly revealed the info I was looking for... but there was one odd response: All of my monitors stated that DHCP was supported and that 2 of the monitors had manufacturing dates of mid 2007. However, one of the monitors shows a manufacturing date of 1990. Obviously something is not right with this. All 3 monitors do show the later model number of 9221. I wonder why that one monitor is not providing a meaningful manufacturing date. I ran the Export EDID function twice but it still yielded the same 1990 date. To add even more confusion: When I run the full serial number on the Apple site they show it as a 23 inch display from 2013 yet the other 2 serial numbers seem to reveal accurate info. Any thoughts on this?
 
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I had a G5 Mac of that era, which had no serial number or date codes. It had had a brand new logic board fitted by a non-Apple repairer - who presumably couldn’t add ID codes to it.
 
I had a G5 Mac of that era, which had no serial number or date codes. It had had a brand new logic board fitted by a non-Apple repairer - who presumably couldn’t add ID codes to it.
This may be what happened here. Good call. I bought one of these 30 inch Cinema monitors directly from Apple at a discount and I believe it was "Apple refurbished". After all of these years I just don't know which one of the 3 it was. For the most part it still provides all of the other info that I was looking for, HDCP, model number, brightness, etc. So, it appears that I have 3 of the late model units which is what I was hoping to confirm. I will post back with my results after my adapters arrive later today. Wish me luck.
 
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