The driver for the USB A2 adapter is generally included within the Siemens STEP 7 software installation. If you need to install it manually from the "PC Adapter USB A2 - Driver Disk" CD, follow these steps:
To ensure the adapter is correctly recognized by your Windows XP system: Simatic Pc Adapter Usb A2 Driver Windows Xp
: Open this utility in your Control Panel. The "PC Adapter USB A2" should be available for selection as an interface. The driver for the USB A2 adapter is
: Ensure all startup programs are closed before beginning. : Ensure all startup programs are closed before beginning
: Right-click Setup.exe on the driver CD and select Run as... , then use the Administrator account. This is critical for installing the required Microsoft Visual C++ 2005 Redistributable .
: After restarting, plug the USB A2 adapter into a USB port. The "Found New Hardware Wizard" should appear.