If you are struggling to get your adapter running on an old XP laptop, follow this "verified" checklist used by field engineers:
Let us parse the liturgy. Siemens: the industrial Goliath, builder of factories, trains, and the programmable logic controllers (PLCs) that choreograph automated machinery. PC Adapter USB A2: a specific, beige dongle—a translator between a modern laptop’s USB port and the archaic, whispering serial cables of an industrial PLC. Driver: the fragile ghost in the machine, the software that allows Windows to speak this hardware’s language. Windows XP: an operating system retired by Microsoft in 2014, now a digital fossil. And finally, verified: the most heartbreaking word of all. It suggests that the seeker has already been burned by corrupted, unsigned, or malicious drivers from shady forums. They don’t just want any driver. They want truth.
This search is not performed by a curious student or a nostalgic gamer. It is performed by a maintenance technician standing in front of a dead conveyor belt in a bottling plant, or an automation engineer crouched inside a control cabinet at a water treatment facility. The factory floor is roaring, except for one silent, critical machine. The laptop in their hand runs Windows 11, but the PLC on the wall—installed during the Bush administration—only speaks to Windows XP via a specific USB adapter whose driver disk was lost a decade ago.
| Check | Expected Result |
|-------|----------------|
| Driver file name | s7uspba2.sys |
| File version | 1.8.x.x (or later) |
| Digital signer | Siemens AG (if signed – older versions may be unsigned) |
| Device Manager status | “This device is working properly.” |
You can also test communication with a known S7-300/400 CPU by going online in SIMATIC Manager. A successful “online” view with no timeout confirms the driver works.
Microsoft ended support for Windows XP in 2014. Siemens also no longer develops or tests new drivers for XP. Running XP on a network-connected PC poses significant security risks. Use this OS only on air-gapped (offline) machines for legacy PLC maintenance.
Solution: The COM port is wrong or the adapter is in a “zombie” state.
The Siemens PC Adapter USB A2 driver for Windows XP is a verified, stable solution when sourced correctly from Siemens’ official support site and installed using the manual “Have Disk” method. While Microsoft and Siemens have moved on to Windows 10/11 and TIA Portal, the reality of industrial maintenance means that XP will remain in service for years.
By following this guide—pre-installation checks, using driver version 1.6.0.0, correctly configuring COM ports in Set PG/PC Interface, and troubleshooting power issues—you can establish a reliable programming connection to S7-300/400 PLCs without the headache of random disconnections or error 10 failures.
Final Pro Tip: Once you have the working driver, immediately back it up. Copy the C:\Siemens_Drivers\USB_A2 folder to a dedicated USB flash drive labeled “XP Verified Drivers” and store it with your programming cable. You will thank yourself when you need to rebuild a machine in three years.
Disclaimer: Always ensure you have proper authorization to connect to operational PLCs. Windows XP should be isolated from the public internet due to security vulnerabilities. This guide is for maintenance on isolated industrial networks only.
The Siemens SIMATIC PC Adapter USB A2 (article number 6GK1571-0BA00-0AA0) is fully verified for use with Windows XP Service Pack 2 (SP2) and higher. This professional-grade adapter serves as a critical bridge for connecting a PG/PC or notebook to SIMATIC S7 systems via PROFIBUS or MPI interfaces. Key Technical Specifications
Interface Support: Compatible with USB V1.1, V2.0, and V3.0 ports.
Operating Systems: Officially supports Windows XP, Vista, and Windows 7 (32/64-bit).
Connection Types: Supports both MPI and PROFIBUS networks with automatic transmission rate detection.
Power Supply: Directly powered via the USB interface, requiring no external power source. Verified Installation Steps for Windows XP
To ensure a successful installation on a Windows XP environment, follow this verified procedure:
Preparation: Close all active programs before beginning. Ensure you have administrative rights on the system.
Driver Execution: Run the Setup.exe from the official PC Adapter USB A2 Driverdisk V1.0.
Core Components: The installer will typically install necessary dependencies, such as the Microsoft Visual C++ 2005 Redistributable, followed by the SIMATIC Device Drivers.
Hardware Connection: Restart the PC, then connect the USB A2 adapter. Windows should trigger the "Found New Hardware Wizard".
Finalization: Select "Install the software automatically." Once complete, verify the device appears under Simatic Net in the Windows Device Manager. Software Integration
PC Adapter USB A2 6GK 1571-0BA00-0AA0 Drivers problem - XP SP3 siemens pc adapter usb a2 driver windows xp verified
The Siemens PC Adapter USB A2 (Article Number: 6GK1571-0BA00-0AA0) is fully compatible with Windows XP SP2 and higher. To ensure a successful installation on this legacy system, you must follow a specific sequence, as the driver includes components like the Microsoft Visual C++ 2005 Redistributable that require administrative rights. Verified Installation Steps for Windows XP
Prepare System: Close all active programs. Do not plug the adapter into the USB port yet.
Run Installer: Locate the PC Adapter USB A2 Driverdisk V1.0 (or higher). Right-click Setup.exe and select Run as... to use the Administrator account.
Complete Driver Setup: The installer will load the "Simatic Device Drivers." Once finished, restart the computer.
Hardware Connection: After the restart, plug in the USB A2 adapter. The "Found New Hardware Wizard" should appear. Choose "Yes, this time only" and then "Install the software automatically".
Verification: Open Device Manager. Under Simatic Net, you should see Simatic PC Adapter USB A2. Technical Specifications & Compatibility
Operating Systems: Windows XP (32/64-bit), Vista, and Windows 7 and higher. Hardware Interface: Supports USB V1.1, V2.0, and V3.0.
Software Support: Compatible with Siemens SiePortal products including STEP 7, TIA Portal, NCM PC, SIMATIC PDM, and Drive ES. Network Types: Supports MPI and PROFIBUS networks. Troubleshooting Common Issues PC Adapter USB A2 6GK 1571-0BA00-0AA0 Drivers problem
Siemens PC Adapter USB A2 (article number 6GK1571-0BA00-0AA0 fully compatible with Windows XP SP2 and higher
. The driver is typically included with major Siemens software installations, such as TIA Portal , but can also be installed as a standalone component. Siemens SiePortal Verified Installation Steps for Windows XP If you are installing the driver from the PC Adapter USB A2 Driverdisk V1.0 , follow these steps to ensure a successful connection: Close Programs
: Shut down all active software before starting the installation. Run as Administrator : Right-click and select
to use the Administrator account; otherwise, the installation of mandatory components like the Microsoft Visual C++ 2005 Redistributable may fail.
: Allow the system to reboot after the "Simatic Device Drivers" are installed. Hardware Wizard : Plug in the USB adapter only
the restart. When the "Found New Hardware Wizard" appears, choose "Yes, this time only" "Install the software automatically" Verify in Device Manager : Open the Device Manager and look under SIMATIC NET for the entry SIMATIC PC Adapter USB A2 Siemens SiePortal Troubleshooting & Configuration Virtual Machine (VM) Use : If using Windows XP in a virtual environment like or VirtualBox, ensure the USB 2.0 controller
is enabled in the VM settings to avoid "internal error" messages. Manual Driver Path
: If the driver is not found automatically, you can manually point the hardware wizard to
C:\Program files\Common files\Siemens\Automation\Simatic OAM\Drivers PG/PC Interface : In the "Set PG/PC Interface" tool, explicitly select PC Adapter USB A2 (MPI) (PROFIBUS)
rather than using "Auto" settings, which are often unreliable on older systems. Siemens SiePortal Key Specifications : Supports MPI and PROFIBUS (9.6 kbit/s up to 12 Mbit/s).
: Supplied entirely via the USB cable; no external power supply is needed. Backwards Compatibility
The Siemens PC Adapter USB A2 (Order No. 6GK1571-0BA00-0AA0) is an essential tool for connecting PCs to SIMATIC S7 controllers via MPI or PROFIBUS. While modern, it remains compatible with Windows XP (Service Pack 2 or higher), provided the correct drivers are applied. Key Driver Information
For most users, the necessary drivers are automatically installed as part of major Siemens software packages such as: STEP 7 (Classic or TIA Portal) SIMATIC NET PC Software STEP 7 Micro/WIN (for PPI networks)
If you do not have these software suites installed, or if the adapter is not recognized, you must use the standalone PC Adapter USB A2 Driver Disk. Installation Guide for Windows XP If you are struggling to get your adapter
Following these specific steps is critical to avoid "Unknown Device" errors in the Device Manager.
Preparation: Close all running programs. Do not plug in the USB adapter yet.
Run Setup: Locate the setup.exe from your driver source or CD. Right-click and select "Run as..." and use the Administrator account to ensure all components, like the Microsoft Visual C++ 2005 Redistributable, install correctly.
Software Installation: Follow the "Simatic Device Drivers" installation wizard until finished.
Restart: You must restart Windows XP for the system to register the new drivers.
Hardware Connection: After restarting, plug the USB A2 adapter into a USB port. The "Found New Hardware Wizard" should appear.
Wizard Completion: Select "Yes, this time only" for Windows Update, then "Install the software automatically". Verification & Troubleshooting Need drivers of PC ADAPTER USB A2 for windows XP
Siemens PC Adapter USB A2 Driver for Windows XP
Verified and Tested
Are you looking for a reliable driver for your Siemens PC Adapter USB A2 on Windows XP? Look no further! This driver has been thoroughly tested and verified to ensure seamless communication between your adapter and computer.
Key Features:
Benefits:
Download the Driver:
You can download the Siemens PC Adapter USB A2 driver for Windows XP from the official Siemens website or other trusted sources. Make sure to extract the files to a designated folder and follow the installation instructions carefully.
Installation Steps:
Troubleshooting Tips:
By following these steps, you should be able to successfully install and use the Siemens PC Adapter USB A2 driver on your Windows XP system.
Drivers for the USB A2 adapter are typically bundled with Siemens engineering software or provided on a standalone "Driver Disk".
Software Bundles: Drivers are automatically installed with STEP 7 (v5.5 SP4+), TIA Portal (v11+), NCM PC, or SIMATIC PDM.
Official Downloads: If you do not have the software installed, you can find the Driverdisk V1.0 on the Siemens Industry Online Support (SIOS) portal. 2. Verified Installation Procedure (Windows XP)
To ensure a successful installation on legacy systems like Windows XP, follow these specific steps:
Preparation: Close all active programs. Ensure you have Administrator rights. Disclaimer: Always ensure you have proper authorization to
Initial Setup: Run Setup.exe from your driver disk or downloaded folder.
Dependency Installation: The installer will typically prompt to install Microsoft Visual C++ 2005 Redistributable. This step must complete successfully for the drivers to function.
Driver Deployment: Follow the "Simatic Device Drivers" wizard until finished, then restart your computer.
Hardware Connection: After the restart, connect the USB A2 adapter. The "Found New Hardware Wizard" will appear.
Finalize Wizard: Select "Yes, this time only" for the Windows Update prompt, then choose "Install the software automatically". 3. Verification & Troubleshooting Once installed, verify the device is recognized correctly:
Device Manager: Check under SIMATIC NET. You should see "SIMATIC PC Adapter USB A2".
PG/PC Interface: Open "Set PG/PC Interface" from the Control Panel. The adapter must appear in the selection list for MPI or PROFIBUS communication.
Path for Manual Update: If the device is not recognized, manually point the Update Driver wizard to C:\Program Files\Common Files\Siemens\Automation\Simatic OAM\Drivers. 4. Technical Specifications for XP Hardware Interface: USB 2.0 (compatible with 1.1 and 3.0).
Protocols: Supports MPI (Multi-Point Interface) and PROFIBUS DP.
Isolation: Features electrical isolation between the USB and MPI/DP interfaces.
If you tell me which Siemens software (like STEP 7 or TIA Portal) you are using, I can help you configure the PG/PC interface for your specific PLC connection. PC Adapter USB A2 6GK 1571-0BA00-0AA0 Drivers problem
The thrill of the hunt for the perfect driver! It was a dark and stormy night, and John was on a mission to find the elusive Siemens PC Adapter USB A2 driver for his trusty Windows XP machine.
As he sat in front of his computer, he scoured the internet for what felt like hours, clicking on link after link, only to be met with dead ends and broken mirrors. His eyes were glazing over, and his frustration was growing by the minute.
Just when he was about to give up, he stumbled upon a small, obscure forum hidden deep in the depths of the world wide web. The thread was titled "Siemens PC Adapter USB A2 driver for Windows XP - A Holy Grail?" and it was started by a fellow tech enthusiast who claimed to have found the solution.
John's heart skipped a beat as he read through the conversation. The user, known only by their handle "Siemens_Savior," claimed to have downloaded the driver from a reliable source and had verified its authenticity. The post was dated months ago, but John was willing to try anything.
With trembling hands, John clicked on the link provided by Siemens_Savior and downloaded the driver. He extracted the files and began the installation process, holding his breath as the wizard guided him through the setup.
As the installation completed, John felt a surge of excitement. He plugged in his Siemens PC Adapter USB A2, and to his delight, Windows XP recognized it immediately. The device manager showed a green checkmark, and the adapter was ready to use.
John couldn't believe his luck. He sent a heartfelt thank-you message to Siemens_Savior, and the two began to chat about their shared struggles with legacy hardware. John learned that Siemens_Savior was a retired engineer who had worked on the original Siemens PC Adapter USB A2 team and had been keeping an eye on the community, helping those in need.
With his adapter up and running, John was able to breathe new life into his old projects. He spent the rest of the evening tinkering with his setup, feeling grateful for the kindness of strangers on the internet.
From that day on, John made sure to spread the word about the magic of the Siemens PC Adapter USB A2 driver for Windows XP, and the legend of Siemens_Savior lived on as a hero to those who still used this vintage hardware.
The driver, once a mere myth, had become a treasured artifact, cherished by those who had experienced the thrill of the hunt and the satisfaction of a problem solved. And John, well, he made sure to keep his Windows XP machine running smoothly, with the Siemens PC Adapter USB A2 driver firmly in place, a reminder of the power of community and determination.
By: Cogent Devs - A Design & Development Company