crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934243:0crwdne2934243:0 Dan

crwdns2934249:0crwdne2934249:0:

The question is more of which way things might work!
If you read the rest of the dialog [post|551421] You’ll see there is a difference in the ribbon cable connections!
[image|2292844]
iMac Intel 21.5" '''Retina 4K''' Display 2015 Logic board
[image|2292845]
iMac Intel 21.5" '''Retina 4K''' Display 2017 Logic board
[image|2292862]
iMac Intel 21.5" Standard Retina Display 2015 & 2017 Logic board
Note the size differences in the top right metal connector that’s the displays data connector. There is a big difference between the interfaces! eDP on the 2015 model and iDP on the 2017 4K displays.
-Kaellis who jumped into the dialog I think was confused! What I’m suspecting happened is he got confused between the Retina Vs 4K displays as both the ‘15 & ‘17 series offered a Retina model which as it turns out use the same display!
+Kaellis who jumped into the dialog I think was confused! What I’m suspecting happened is he got confused between the Retina Vs 4K displays as both the ‘15 & ‘17 series offered a Retina model which as it turns out use the same display (older eDP)!
So if you have a 4K display you need to replace it with the correct one!
Reference, Retina 4K iMac 21.5" LCD Display Panels:
* 2015 - Apple P/N 661-02990, Display ID - LM215UH1 (SD)(A1)
* 2017 - Apple P/N 661-07322, Display ID - LM215UH1 (SD)(B1)

crwdns2915684:0crwdne2915684:0:

open

crwdns2934245:0crwdne2934245:0 Dan

crwdns2934249:0crwdne2934249:0:

The question is more of which way things might work!
If you read the rest of the dialog [post|551421] You’ll see there is a difference in the ribbon cable connections!
[image|2292844]
-iMac Intel 21.5" Retina 4K Display 2015 Logic board
+iMac Intel 21.5" '''Retina 4K''' Display 2015 Logic board
[image|2292845]
-iMac Intel 21.5" Retina 4K Display 2017 Logic board
+iMac Intel 21.5" '''Retina 4K''' Display 2017 Logic board
-Note the size differences in the top right metal connector that’s the displays data connector. There is a big difference between the interfaces! eDP on the 2015 model and iDP on the 2017.
+[image|2292862]
+
+iMac Intel 21.5" Standard Retina Display 2015 & 2017 Logic board
+
+Note the size differences in the top right metal connector that’s the displays data connector. There is a big difference between the interfaces! eDP on the 2015 model and iDP on the 2017 4K displays.
Kaellis who jumped into the dialog I think was confused! What I’m suspecting happened is he got confused between the Retina Vs 4K displays as both the ‘15 & ‘17 series offered a Retina model which as it turns out use the same display!
So if you have a 4K display you need to replace it with the correct one!
Reference, Retina 4K iMac 21.5" LCD Display Panels:
* 2015 - Apple P/N 661-02990, Display ID - LM215UH1 (SD)(A1)
* 2017 - Apple P/N 661-07322, Display ID - LM215UH1 (SD)(B1)

crwdns2915684:0crwdne2915684:0:

open

crwdns2934245:0crwdne2934245:0 Dan

crwdns2934249:0crwdne2934249:0:

The question is more of which way things might work!
If you read the rest of the dialog [post|551421] You’ll see there is a difference in the ribbon cable connections!
[image|2292844]
iMac Intel 21.5" Retina 4K Display 2015 Logic board
[image|2292845]
iMac Intel 21.5" Retina 4K Display 2017 Logic board
-Note the size differences in the top right connector that’s the displays data connector. There is a big difference between the interfaces! eDP on the 2015 model and iDP on the 2017. Kaellis who jumped into the dialog I think was confused! What I’m suspecting happened is he got confused between the Retina Vs 4K displays as both series offered a Retina model which as it turns out use the same display!
+Note the size differences in the top right metal connector that’s the displays data connector. There is a big difference between the interfaces! eDP on the 2015 model and iDP on the 2017.
+
+Kaellis who jumped into the dialog I think was confused! What I’m suspecting happened is he got confused between the Retina Vs 4K displays as both the ‘15 & ‘17 series offered a Retina model which as it turns out use the same display!
So if you have a 4K display you need to replace it with the correct one!
Reference, Retina 4K iMac 21.5" LCD Display Panels:
* 2015 - Apple P/N 661-02990, Display ID - LM215UH1 (SD)(A1)
* 2017 - Apple P/N 661-07322, Display ID - LM215UH1 (SD)(B1)

crwdns2915684:0crwdne2915684:0:

open

crwdns2934245:0crwdne2934245:0 Dan

crwdns2934249:0crwdne2934249:0:

The question is more of which way things might work!
-If you read the rest of the dialog [post|551421] You’ll see there is a difference in the ribbon cable connections?
+If you read the rest of the dialog [post|551421] You’ll see there is a difference in the ribbon cable connections!
[image|2292844]
iMac Intel 21.5" Retina 4K Display 2015 Logic board
[image|2292845]
iMac Intel 21.5" Retina 4K Display 2017 Logic board
Note the size differences in the top right connector that’s the displays data connector. There is a big difference between the interfaces! eDP on the 2015 model and iDP on the 2017. Kaellis who jumped into the dialog I think was confused! What I’m suspecting happened is he got confused between the Retina Vs 4K displays as both series offered a Retina model which as it turns out use the same display!
So if you have a 4K display you need to replace it with the correct one!
Reference, Retina 4K iMac 21.5" LCD Display Panels:
* 2015 - Apple P/N 661-02990, Display ID - LM215UH1 (SD)(A1)
* 2017 - Apple P/N 661-07322, Display ID - LM215UH1 (SD)(B1)

crwdns2915684:0crwdne2915684:0:

open

crwdns2934245:0crwdne2934245:0 Dan

crwdns2934249:0crwdne2934249:0:

The question is more of which way things might work!
If you read the rest of the dialog [post|551421] You’ll see there is a difference in the ribbon cable connections?
[image|2292844]
+
+iMac Intel 21.5" Retina 4K Display 2015 Logic board
+
+[image|2292845]
+
+iMac Intel 21.5" Retina 4K Display 2017 Logic board
+
+Note the size differences in the top right connector that’s the displays data connector. There is a big difference between the interfaces! eDP on the 2015 model and iDP on the 2017. Kaellis who jumped into the dialog I think was confused! What I’m suspecting happened is he got confused between the Retina Vs 4K displays as both series offered a Retina model which as it turns out use the same display!
+
+So if you have a 4K display you need to replace it with the correct one!
+
+Reference, Retina 4K iMac 21.5" LCD Display Panels:
+
+* 2015 - Apple P/N 661-02990, Display ID - LM215UH1 (SD)(A1)
+* 2017 - Apple P/N 661-07322, Display ID - LM215UH1 (SD)(B1)

crwdns2915684:0crwdne2915684:0:

open

crwdns2934241:0crwdne2934241:0 Dan

crwdns2934249:0crwdne2934249:0:

The question is more of which way things might work!

If you read the rest of the dialog [post|551421] You’ll see there is a difference in the ribbon cable connections?

[image|2292844]

crwdns2915684:0crwdne2915684:0:

open