TPM 2.0 usb key for Windows 11 and "old" PC?

Do you have a TPM 2.0 usb key that allows you to install Windows 11 on an “old” pc that does not have a TPM 2.0 chip ? (Infineon optiga TPM 2.0 SLB 9665 TT 2.0 or equivalent).

That’s not how TPM works… TPM chips need to be built into the main board, they can not be added as a USB device. Typical USB chips are connected via SPI.

So no, we do not have something like that and can also not build it, even if we wanted to.


I think you could provide a virtual tpm device to a virtual machine in which you would run Windows, but Windows 11 will likely not support the cpu in your old pc:

(I’m running Windows 11 in a virtual machine and do not use a virtual tpm but instead provide the host tpm to the vm)

think you meant TPM and LPC/eSPI :wink:

Yeah, seem to have been in a rush, “USB” was clearly wrong :wink:
Technically the connection is SPI, here is e.g. a datasheet of the SLB9670:

Pins are MISO, MOSI, SCK and a CS which are the SPI interface pins, SCK is clock, MISO is data input, MOSI is data output and CS is chip select.