Sadly, with the ones which were originally shipped as "PRC" systems new have it completely removed, with a completely different motherboard. It cannot be added to the machines at all - even after purchase. The BIOS doesn't support it and the motherboards are COMPLETELY UNIQUE to China (different DP/N and likely BIOS/Intel Boot Guard private keys), so you can't swap them "like for like" outside of China if it originated there.
This list is not all inclusive, but it can be used as a baseline; if the model is related and lacks the TPM option, it might be another one with the TPM removed due to being a "PRC" unit when shipped as new.
The rub about the "regulatory requirement" Dells is that they are otherwise compatible; but the lack of a TPM creates a major technicality as the US build of 11 assumes it will be present and acts unsupported with these laptops. Chinese Win11 builds may work with the China TCM, but I'm NOT TESTING these Chinese TPMs for compatibility with US builds of 11. This is not your fault, but this now means it means it has no official support from Microsoft outside of being in China where this issue is expected to be a problem!
Note: These are sometimes called a "China TPM", notably by Dell.
Yours checks all the boxes so it'll run fine... but the lack of a HW TPM or fTPM means you won't get official support from Microsoft in the US (or any country that doesn't have such draconian laws on tech that doesn't legally force there to be backdoors). While it may not be "supported" if I had this laptop I'd probably install 11 with the Rufus CPU/TPM bypass applied since the "issue" is not the machine; it's the Chinese government forcing companies to remove the TPM at the PCB level for "PRC" sold equipment.
The issue is a rather infamous "national security" law around TPMs. Essentially China bans any non-homegrown TPM from other countries. China has a unique spec which is referred to as a TCM; and yes, the spec is confidential to anyone outside of China who makes these things. And yes, it's why you think it is (backdoors and weak encryption which is reversible rather than non-reversible; frowned upon in literally most of the world outside of China).
NOBODY WILL TOUCH THE TCM SPEC BESIDES CHINA FOR MANY GOOD REASONS! If a US company does want to do it, they isolate the US portion. Most will not partake in manufacturing these things without a Chinese firewall and set up a China subsidiary for... obvious reasons. The only way to avoid issues with these "China TPM" modules in the US and the rest of the world is to keep the CCP from being able to touch the US branch.
What Dell did was rather than deal with finding a compliant part to work around China's "national security" TPM ban with a weak "TCM", remove it altogether. Dell did figure out how to deal with the ban at some point, but it wasn't with your machine :-(. These pre-TCM Dells are forever crippled. You would think this isn't a problem but is IS; Win11 being one, but the used market... I can import a Canadian (or any other sane country) version into the US with a normal TPM and no problems, but if it's a "PRC" Dell with this problem the only resolution is a new motherboard.
Is it possible the laptop has an fTPM? Yes, but knowing the Chinese gov't it's either permanently disabled with a different Boot Guard private key or disable at the manufacturing level (even if I put a US/Canada BIOS on).
For full support, you need a US motherboard you can program your ST onto to add the TPM back. The other options are the unofficial upgrade/whole unit replacement. If you replace the laptop and sell this one, please be upfront that it's a non-TPM "PRC" laptop. You will lose money on it but would you rather take the hit upfront or have to take this problem laptop back?
This is what you will see on a TCG complaint computer -- Dell uses Infineon or Nuvoton (my 7490 is Nuvoton, while my E7440 was Infineon 1.2; fTPM computers will say AMD or Intel):
Intel fTPM: