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What Unix command could help identify if an M.2 slot is compatible with an M.2 Coral TPU? Are there general recommendations what firmware/BIOS settings to enable/disable for M.2 Coral TPU?

I have

  • Coral M.2 Accelerator with Dual Edge TPU
  • minirout.com CM-M1 Mini PC.

The Mini PC has two M.2 headers:

  • M.2 2230 E-Key（WIFI）: PCIe + USB Protocol
  • M.2 2242 M-Key（SSD）: PCIe X2/SATA Protocol

I removed the WiFi card and inserted Coral TPU. However the system no longer boots when the card is inserted (auto shut down after a couple seconds). ChatGPT thinks that the M.2 ports are compatible but that I might only have 1X PCIe protocol.

I believe I should be able get one of the two TPUs working with this setup.

I confirmed that the card works as it is recognized in my laptop when I replace its WiFi card with the TPU.

I searched for EFI/BOOT update on manufacturers website and I have current version.

The AMI firmware has lots of options and its tough to figure out if changing any of them will solve my problem.

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  • You read the specifications. Take M.2 E-key (with two PCIe Gen2 x1 lanes) for instance. It’s a PCIe M.2 device. Provided the size of the device will work then it’s compatible. The size of course for that product is “22 mm x 30 mm (M.2-2230-D3-E)” As for not turning on, it’s probably try to draw, to much power suspect that m.2 slot isn’t actually PCIe Gen2
    – Ramhound
    Commented May 18 at 22:13

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