It's hard to say which is the correct TPM chip, because you need a TPM 2.0 chip, but in 2012 when your board came out, there was no TPM 2.0 yet. So the manual doesn't give any hints as to what TPM chip you would need (i checked).
Anyway, TPM chips are scarce, because scalpers bought up a bunch of them in order to re-sell them at higher prices. I've seen some poor souls pay up to 140 € on eBay for a TPM chip, this is absolutely crazy. These chips should cost 10 to 20 bucks at most. But the announcement from Microsoft made people nervous and now they all want to get a TPM chip.
So there's a hype around these modules, coupled with a global chip shortage. Due to that high demand and low supply, it makes no sense to buy a TPM chip now. I would wait it out until Windows 11 is finished and things have calmed down. Then you will also have feedback from people with old mainboards (pre-fTPM) so you'll know what module would be needed.