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Nice work! Would this be compatible with an M.2 to PCIe adaptor? [1]

Being able to attach an Intel 660P and get 2 TB of fast SSD storage on a Raspberry Pi would be sweet.

[1] https://www.amazon.com/EZDIY-FAB-Express-Adapter-Support-221...

Technically yes, but it's only a PCIe 1x Gen2 slot, so only 500MB/s of bandwidth (4x Gen3 is ~4GB/s). You'd be better off with a USB 3.0 to M.2 adapter.

The bandwidth works out about the same, but the USB controller and AHCI controllers will add quite some latency (and CPU load).

I'd like to see benchmarks, but my guess is single-thread random 4k read performance will more than double via PCI Express rather than the USB.

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