If anybody is interested in slot m.2 E for google coral setup I just tested that. Initial setup done via official page: https://coral.ai/docs/m2/get-started/
It dies when it comes to compiling DKMS module, to fix that additional step is needed:
apt-get install -y libssl-dev build-essential
cd /usr/src/linux-headers-$(uname -r)
Once done, gasket module installs without problems. There were some other problems, on example parrot image test, but after adding user to gasket group and reboot all is ok and test is working as in instruction.
I tried DUAL EDGE TPU but there is only one pcie lane wired to slot and only one TPU is visible. Bofh may work with additional adapter: https://github.com/magic-blue-smoke/Dual-Edge-TPU-Adapter
Working tpu is hot, even when it’s not computing anything, cam interface makes it hard to cool, no air flow near it I installed max version of lib and make some tests, with additional cooling it works ok.