-----------------------------------------------------
------------------- MAIN EDID BLOCK -----------------
-----------------------------------------------------
EDID Version........1.4
Manufacturer........XXX (XXXX)
Product ID..........XXXXX (XXXX)
Serial Number.......XXXXXXXX
Manufactured........Week 18 of year 2019
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.
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 excellent MacTracker app (Mac App Store, developer site) shows these dates for the two models: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.
Product ID..........37408 (9220)
Manufactured........Week 47 of year 2004
The oldest being from week 31 of 2007. Supports HDCP, as do the other two.
HDCP is not supported
.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.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.