: Search the Microsoft Update Catalog for "EZUSB" or "Castles" to find older signed drivers that often still work on Windows 11.
Officially? Most manufacturers stopped updating the Ez100pu driver after Windows 8.1. However, the Windows 10 driver is fully compatible with Windows 11 (both share the same core architecture). You just need to install it correctly. Ez100pu Driver Windows 11
Search for "SCM Microsystems smart card reader driver Windows 10" on the Identiv official website. Avoid third-party "driver update" tools at all costs. : Search the Microsoft Update Catalog for "EZUSB"