– VOGONS (for gaming) and MSFN (for Windows XP enthusiasts) have verified driver repository threads.
Restart the computer once the "SIMATIC Device Drivers" installation is complete. : pc adapter usb a2 driver windows xp
While to install the PC Adapter USB A2 driver on Windows XP (32-bit, SP3) using legacy driver v2.0, this configuration is not recommended for production environments. Siemens provides no support, security updates, or performance guarantees. The combination should only be used in isolated, air-gapped legacy systems where hardware replacement is impossible. – VOGONS (for gaming) and MSFN (for Windows
Common chipsets and where to get drivers SP3) using legacy driver v2.0