The Intel® Trusted Platform Module 2.0 replaces the hardware TPM. The Intel Trusted Platform Module is a hardware-based security device that protects the system start-up process by ensuring that it is tamper-free before releasing system control to the operating system. You can see in bios if its there or not. Its under security. [IMAGE]DELL TPM via PTT [URL] There are also versions for China. I believe its not allowed in Russia so it depends on where the system is made. Trusted Platform Module (TPM 2.0) - TPM 2.0 is a microcontroller that stores keys, passwords, and digital certificates. A discrete TPM 2.0 also supports Intel® vPro™ Technology and Intel® Trusted Execution Technology (Intel® TXT).Intel PTT is a platform functionality for credential storage and key management used by Windows 8* and Windows® 10. Intel PTT supports BitLocker* for hard drive encryption and supports all Microsoft requirements for firmware Trusted Platform Module (fTPM) 2.0. Intel Platform Trust Technology (Intel PTT) which was introduced back in 2013. Intel PTT is basically the firmware alternative to a the hardware based TPM. Intel PTT works on pretty much every processor/chipset since 4th Gen Core (Haswell) processors were introduced and it even supports BitLocker.    
I got conflicting information from different Dell customer service. Some told me, "Yes, all new XPS comes with built in TPM", some told me "None of the XPS models every had TPM". Dell's website also gives conflict information.  Did anybody just recently bought a XPS desktop, or the XPS special edition desktop? Can you check if you have TPM in your machine?   Thanks
Does XPS desktop come with TPM?