If you have the .zip or .exe from the Siemens support portal: Extract the contents using 7-Zip. Look for a folder named S7USB or SimaticDeviceDrivers .
Try a different USB port; the A2 requires a stable 500mA draw. Setting the PG/PC Interface pc adapter usb a2 driver windows xp
When the "Found New Hardware" wizard pops up, select "No, not this time" for Windows Update. If you have the
On Windows XP, drivers for this adapter are rarely standalone. They are almost always bundled with Siemens software suites. 1. SIMATIC Step 7 Installation pc adapter usb a2 driver windows xp
Select "Install the software automatically." Verification: Right-click My Computer > Manage > Device Manager .