If the adapter is not working:
Fix:
Open the dongle casing (gently). Look for the main IC: pc adapter usb a2 driver windows xp
Remember: For the "PC Adapter USB A2," 90% of cases are CSR (VID_0A12). We will focus on CSR drivers, but we will cover Broadcom alternatives. If the adapter is not working: Fix :
A small utility from NirSoft that gives exhaustive USB information, even without drivers installed. Remember: For the "PC Adapter USB A2," 90%
Once you have the VID/PID, search Google for “Windows XP driver VID_xxxx PID_yyyy” – this yields specific, safe results.