[puzzle]

It's the new TPM? The old one had a (now patched) firmware bug, which newer Chromebooks like the Pixelbook don't seem to be vulnerable to:

https://www.chromium.org/chromium-os/tpm_firmware_update

Edit: this is what Chrome devices use it for https://www.chromium.org/developers/design-documents/tpm-usa...

[asciilifeform]

Cr50 has replaced the old Infineon TPM, which the above link concerns.