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How to replace the main logic board in an iMac

Replacing the Fusion Drive with both a SSD and an harddisk

July 30, 2020 -

This month I did an attempt to upgrade my 27-inch iMac 5K. I wanted to replace the fusion drive with a SSD and a large hardisk. In addition I decided this was a good time to upgrade the RAM memory as well, maxing it out at 64GB. I was on a mission to create the ultimate iMac, but things didn't go to plan!

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iMac G3 (1998)
iMac G3 (1998)
Decoupling the fusion drive: separating the conventional harddisk from the PCIe SSD
Decoupling the fusion drive: separating the conventional harddisk from the PCIe SSD
iMac ad - note the text emphasising to get you online in 10 minutes
iMac ad - note the text emphasising to get you online in 10 minutes
Disconnecting the headphone cable
Disconnecting the headphone cable
Today's iMac (in two sizes)
Today's iMac (in two sizes)
YES, it works! The new logic board accepted keyboard input and allowed me to proceed with macOS installation
YES, it works! The new logic board accepted keyboard input and allowed me to proceed with macOS installation

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