Related: Windows 11 Causes TPM Shortages, Scalping: Here's Where to Buy.
Windows 11 is Microsoft's first operating system to require a TPM, or
Trusted Platform Module, sending frantic would-be upgraders to online retailers in search of hardware modules. Demand has exploded overnight as users try to nab a TPM as quickly as possible to ensure their PC is compatible with the new operating system, but the market is rough. In some cases, TPMs that sold for $15 are now as high as $100 through eBay. - https://www.tomshardware.com/news/tpm-modules-unobtainable-expensive-windows-11
