Delphi 100 251 Rev 10 Driver Download New Updated Jun 2026
Newer driver revisions provide the necessary digital signatures required by modern operating systems like Windows 10 and Windows 11.
: The DS diagnostic software is typically managed through the Delphi Auto Parts
If your computer still does not recognize the Delphi interface:
The driver files are usually distributed in a compressed ZIP folder containing .inf , .sys , and .cat files.
This is usually a licensing or software issue, not a driver problem. Many users on forums like MHH Auto report having to input the "100251" serial number for the software license during activation. delphi 100 251 rev 10 driver download new
The “rev 10” in the search query refers to a specific hardware revision of the device’s internal USB-to-serial bridge chip. Unlike later revisions that used standard, Microsoft-signed drivers, rev 10 sat at an awkward crossroads. It was released just before driver signing became mandatory for 64-bit versions of Windows. Consequently, it uses a proprietary, unsigned, and now-orphaned driver from FTDI (Future Technology Devices International) or a Delphi-customized version.
software, which allows for reading/erasing fault codes (DTCs), viewing live data, and performing bi-directional component testing. Driver & Software Download Guide
It is critical to download drivers from trusted sources to avoid malware. The driver is usually supplied alongside the software.
This is the story of the Delphi DS100E (often referred to in shorthand as the 100 251), a rugged vehicle diagnostic interface from the early 2000s, and the strange, dangerous, and often absurd hunt for its “rev 10” driver. Many users on forums like MHH Auto report
Right-click it, select , and choose the local file search option again.
Avoid downloading drivers from unverified "free download" sites that require their own installers, as these often contain malware. Always prefer the drivers provided with your software package or from the official Delphi support site .
: Look for "Autocom CDP+ USB" or "USB Serial Port" marked with a yellow exclamation icon.
Downloading and installing the Delphi 100 251 Rev 10 driver is a straightforward process. Follow these steps: It was released just before driver signing became
Use a program like 7-Zip or WinRAR to extract the contents of the downloaded archive to a dedicated folder on your Desktop (e.g., C:\Delphi_Install ).
If your computer displays a in Device Manager, follow these steps to manually map your drivers:
What does the device show in Windows Device Manager? Share public link
Click and point the installer to the folder containing your downloaded or software-provided driver files.
To ensure your device functions correctly and to avoid security risks associated with counterfeit software, it is recommended to use official sources: Official Delphi Software