Windows 98 SE now has experimental support for USB4 and Thunderbolt 3/4 through the xHCI98 v3.0.0.0 driver developed by Yeo Kheng Meng. This driver enables the use of generic USB 3.x, USB4, and Thunderbolt host controllers on legacy operating systems like Windows 98 SE, ME, 2000, XP, Vista, and 7. It allows connections for USB storage devices, replaces native USB drivers, and supports USB 1.1, 2.0, SuperSpeed devices, UAS storage, and Thunderbolt docks and NVMe enclosures. Meng utilized AI tools for development and primarily tested the driver on Intel hardware, while advising users to be cautious of potential bugs. He also provides guidance on hardware compatibility, installation methods, and updates.