Buy Fusion Drive -

You can purchase the proprietary PCIe SSD portion for repairs.

A Fusion Drive is not a single physical part but a logical volume managed by macOS. buy fusion drive

Compatible with iMac models A1418 and A1419. Available for around $39 to $52 at eBay - mybagpack. You can purchase the proprietary PCIe SSD portion

It aimed to provide the massive storage of an HDD at a lower cost than a large SSD, while still offering faster boot times. while still offering faster boot times.