Zelio Sr2 Usb01 Driver Windows 10 Download 2021 | OFFICIAL |

The driver is actually a Silicon Labs CP210x USB-to-UART driver (the SR2 USB01 uses a CP2102 chip inside).

You can download the generic CP210x driver from Silicon Labs directly:

This driver works perfectly with the SR2 USB01 on Windows 10 (including 2021 updates).

If running the downloaded installer does not immediately resolve the issue, you must force Windows to use the driver files manually. zelio sr2 usb01 driver windows 10 download 2021

  • Confirmation: Windows should successfully install the driver. The device should now appear under Ports (COM & LPT) as something similar to "Schneider Electric SR2USB01 (COMx)".

    • Downloading and installing the Zelio SR2 USB01 driver for Windows 10 in 2021 requires a deliberate, manual approach due to Microsoft's strict driver policies and aging hardware chips. The official Schneider Electric driver is your first and best option, followed by the legacy Prolific driver workaround, and finally the hardware upgrade to an FTDI-based adapter.

    By following this guide, you should be able to restore communication between your modern Windows 10 PC and your Zelio Logic SR2 smart relay, allowing you to upload, debug, and download programs without downgrading your operating system.

    Still having issues? Check the physical cable for damage – a broken internal wire in the SR2 USB01 is more common than a driver failure. If possible, test the cable on a Windows 7 machine to confirm the hardware functions before further troubleshooting. The driver is actually a Silicon Labs CP210x

    Disclaimer: This article is for informational purposes. All trademarks are property of their respective owners. Driver installation should follow manufacturer guidelines.

    Here’s a step-by-step guide to finding and installing the Zelio SR2 USB01 driver on Windows 10 (focusing on the 2021 timeframe and compatibility).

    As of 2021, official downloads were only available via Schneider Electric’s website: This driver works perfectly with the SR2 USB01

    | Item | Source | Notes | |------------------------|------------------------------------------------|----------------------------------------------| | Zelio Soft 2 (full) | Schneider Electric SE Download Center | Includes SR2 USB01 driver. Free to download. | | Standalone SR2 USB01 driver | Not officially provided by Schneider | Unsupported; manual extraction required. |

    File examples (2021 timeframe):

    | Error in Device Manager | Likely Cause | 2021 Fix | | :--- | :--- | :--- | | Code 10 (Device cannot start) | Windows 10 blocked the old Prolific chip. | Install legacy Prolific driver v3.3.2.105 (Section 4). | | Code 43 (Device descriptor failed) | Corrupt driver or USB port power issue. | Try different USB port (USB 2.0, not USB 3.0). Unplug other USB devices. | | "Unable to open COM port" in Zelio Soft 2 | Wrong COM port number (>16) or software mismatch. | Change COM port number to 1-16 in Device Manager > Advanced. | | Driver is not digitally signed | Windows 10’s integrity check. | Disable driver signature enforcement (temporarily) or use the signed driver from Schneider (post-2020). |

    The driver is not available as a standalone download from Schneider Electric’s public website. Instead, it is included with the Zelio Soft 2 software.

    To get the driver in 2021 (and now):

  • Search for "Zelio Soft 2"
  • Download the latest version (e.g., V5.4 or higher – 2021 era would be around V5.3/V5.4)
  • During installation, the USB driver for SR2USB01 will be installed automatically.