@gpoole Thank you! I'm sure this will be quite useful in my homelab, but maybe not at work just yet... particularly because I am hopeful Olivier and Vates are able to integrate this into XOA.
This is because I am looking into integrating at least one HSM into our xcp-ng infrastructure, and the $650 USB-A YubiHSM2 is quite attractive. It would be great to be able to reliably pass this through via XOA to a Windows Server VM. I could imagine this use case being potentially important for small-medium sized companies looking for alternatives to typical expensive HSMs.