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Current version by: Dan ,

Text:

The newer iMac's have two drive ports a 3.5" HDD and a custom blade SSD. Depending on the when the model was released it will have a two or four lane PCIe/NVMe custom Apple SSD.
 
A Fusion Drive'd system leverages both drive ports (each has a device) so there is no free ports.
 
So moving on what you can alter here... You can break the Fusion drive set to the discreet drives (which you need to do first)first) [https://www.macworld.com/article/2015664/storage-flash/how-to-split-up-a-fusion-drive.html|How to split up a Fusion Drive]. The easier alteration is the swap out the HDD to a 3.5" SSHD or 2.5" SSD drive (with an adapter frame) in either case you'll need this part as well: [https://eshop.macsales.com/item/OWC/DIDIMACHDD12/|OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later] and here is the IFIXIT guide: [guide|30522]. Replacing the blade SSD can be done but its a lot more work. Here's the IFIXIT guide to do that: [guide|30537] The rub here is getting the correct Apple SSD or go with OWC or Transcend SSD (both are only two Lane PCIe units).
So moving on what you can alter here... You can break the Fusion drive set to the discreet drives (which you need to do first)first) [https://www.macworld.com/article/2015664/storage-flash/how-to-split-up-a-fusion-drive.html|How to split up a Fusion Drive]. The easier alteration is the swap out the HDD to a 3.5" SSHD or 2.5" SSD drive (with an adapter frame) in either case you'll need this part as well: [https://eshop.macsales.com/item/OWC/DIDIMACHDD12/|OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later] and here is the IFIXIT guide: [guide|30522]. Replacing the blade SSD can be done but its a lot more work. Here's the IFIXIT guide to do that: [guide|30537] The rub here is getting the correct Apple SSD or go with OWC or Transcend SSD (both are only two Lane PCIe units).
 
Do be careful taking the display off as its very easy to damage it if you don't use the correct tools and follow the techniques shown in the guides. If you don't it would be a very expensive Oops!

Status:

open

Edit by: Dan ,

Text:

The newer iMac's have two drive ports a 3.5" HDD and a custom blade SSD. Depending on the when the model was released it will have a two or four lane PCIe/NVMe custom Apple SSD.
 
A Fusion Drive'd system leverages both drive ports (each has a device) so there is no free ports.
 
So moving on what you can alter here... You can break the Fusion drive set to the discreet drives (which you need to do first). The easier alteration is the swap out the HDD to a 3.5" SSHD or 2.5" SSD drive (with an adapter frame) in either case you'll need this part as well: [https://eshop.macsales.com/item/OWC/DIDIMACHDD12/|OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later] and here is the IFIXIT guide: [guide|30522]. Replacing the blade SSD can be done but its a lot more work. Here's the IFIXIT guide to do that: [guide|30537] The rub here is getting the correct Apple SSD or go with OWC or Transcend SSD (both are only two Lane PCIe units).
 
Do be careful taking the display off as its very easy to damage ingit if you don't use the correct tools and follow the techniques shown in the guides. If you don't it would be a very expensive Oops!
Do be careful taking the display off as its very easy to damage ingit if you don't use the correct tools and follow the techniques shown in the guides. If you don't it would be a very expensive Oops!

Status:

open

Edit by: Dan ,

Text:

The newer iMac's have two drive ports a 3.5" HDD and a custom blade SSD. Depending on the when the model was released it will have a two or four lane PCIe/NVMe custom Apple SSD.
 
A Fusion Drive'd system leverages both drive ports (each has a device) so there is no free ports.
 
So moving on what you can alter here... You can break the Fusion drive set to the discreet drives (which you need to do first). The easier alteration is the swap out the HDD to a 3.5" SSHD or 2.5" SSD drive (with an adapter frame) in either case you'll need this part as well: [https://eshop.macsales.com/item/OWC/DIDIMACHDD12/|OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later] and here is the IFIXIT guide: [guide|30522]. Replacing the blade SSD can be done but its a lot more work. Here's the IFIXIT guide to do that: [guide|30537] The rub here is getting the correct Apple SSD or go with OWC or Transcend SSD (both are only two Lane PCIe units).
 
Do be careful taking the display off as its very easy to damage ing you don't use the correct tools and follow the techniques shown in the guides. If you don't it would be a very expensive Oops!

Status:

open

Edit by: Dan ,

Text:

The newer iMac's have two drive ports a 3.5" HDD and a custom blade SSD. Depending on the when the model was released it will have a two or four lane PCIe/MVMePCIe/NVMe custom Apple SSD.
The newer iMac's have two drive ports a 3.5" HDD and a custom blade SSD. Depending on the when the model was released it will have a two or four lane PCIe/MVMePCIe/NVMe custom Apple SSD.
 
A Fusion Drive'd system leverages both drive ports (each has a device) so there is no free ports.
 
So moving on what you can alter here... You can break the Fusion drive set to the discreet drives (which you need to do first). The easier alteration is the swap out the HDD to a 3.5" SSHD or 2.5" SSD drive (with an adapter frame) in either case you'll need this part as well: [https://eshop.macsales.com/item/OWC/DIDIMACHDD12/|OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later] and here is the IFIXIT guide: [guide|30522]. Replacing the blade SSD can be done but its a lot more work. Here's the IFIXIT guide to do that: [guide|30537] The rub here is getting the correct Apple SSD or go with OWC or Transcend SSD (both are only two Lane PCIe units).

Status:

open

Original post by: Dan ,

Text:

The newer iMac's have two drive ports a 3.5" HDD and a custom blade SSD. Depending on the when the model was released it will have a two or four lane PCIe/MVMe custom Apple SSD.

A Fusion Drive'd system leverages both drive ports (each has a device) so there is no free ports.

So moving on what you can alter here... You can break the Fusion drive set to the discreet drives (which you need to do first). The easier alteration is the swap out the HDD to a 3.5" SSHD or 2.5" SSD drive (with an adapter frame) in either case you'll need this part as well: [https://eshop.macsales.com/item/OWC/DIDIMACHDD12/|OWC In-line Digital Thermal Sensor for Hard Drive Upgrade for 27" iMacs 2012 and Later] and here is the IFIXIT guide: [guide|30522]. Replacing the blade SSD can be done but its a lot more work. Here's the IFIXIT guide to do that: [guide|30537] The rub here is getting the correct Apple SSD or go with OWC or Transcend SSD (both are only two Lane PCIe units).

Status:

open