If your graphics card supports VirtualLink, you don't need an adapter to use PlayStation VR2 on a PC. - UploadVR
If Your Graphics Card Has VirtualLink, You Don't Need The Adapter To Use PlayStation VR2 On PC
PlayStation VR2’s PC adapter has been released today, making it possible to use the PSVR 2 with a PC VR setup. While this adapter is necessary for most modern graphics cards, users with older NVIDIA RTX 20 series and AMD RX 6000 series cards featuring a VirtualLink USB-C port can connect the headset directly without the adapter. The VirtualLink standard, which supported a streamlined single-port connection, has been discontinued in recent GPU generations. For a comprehensive review and more details, visit the full story at UploadVR.
Source: https://www.uploadvr.com/psvr2-on-pc-without-adapter-virtuallink/