To successfully set up the adapter on an XP machine, follow these steps: Siemens SiePortal Prepare the System
This is the safest and most reliable source. Siemens provides the official "Driverdisk V1.0" for the PC Adapter USB A2. siemens pc adapter usb a2 driver windows xp
Reinstalling drivers cleanly:
Complete Guide to Installing the Siemens PC Adapter USB A2 Driver on Windows XP To successfully set up the adapter on an