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Back to the business of taking things apart: next up are these twin "SSDs."

Under a couple stickers we find some Torx screws. Off they go!

Each blade is designated Apple EMC 3197, model 656-0061A.

Popping the shields off, we encounter some chips:

SanDisk SDRQF8DC8-128G (four per card, two top and two bottom, for a total of 512 GB × 2 = 1024 GB)

Apple 338S00285 power management IC (likely)

Unlike a standard SSD, which has the controller logic onboard, these raw flash modules only have an interface buffer—the PCIe/NVMe controller lies elsewhere. More on that in a bit.

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