Click the button. If the drivers are correct, you will see a confirmation message showing the device serial number and firmware version.

If you are on Windows 7 or 8, the process is smooth because driver signature enforcement is less strict.

: If the device is not recognized, some users find success by manually selecting a "USB Serial Port" driver from a list of available drivers on the computer. Delphi DS150E Installation Guide | PDF | Business - Scribd

| Error | Cause | Solution | |-------|-------|----------| | | Counterfeit FTDI chip blocked | Roll back to older FTDI driver (2.8.24.0) or use modified ftdibus.sys | | Code 52 (Unsigned driver) | Driver signature enforcement on | Disable as shown in Step 4.1 | | Device not detected at all | Bad USB port/cable or dead device | Try USB 2.0 port, different cable, check device LEDs | | Software sees "No Interface" | Wrong driver installed | Uninstall driver, reinstall using device-specific .inf | | Blue screen when connecting | Driver conflict or corrupted install | Boot safe mode, remove all FTDI/Delphi drivers, reinstall |

(also known as Autocom or Delphi 2015) remains one of the most popular aftermarket diagnostic tools for cars, trucks, and heavy-duty vehicles. However, the most common nightmare for users isn’t diagnosing an engine fault—it’s getting the damn USB driver to install correctly .

After successful installation:

You plug in your DS150E, Windows sees it, but it shows up as "Unknown Device" or "FT232R USB UART" with a yellow exclamation mark.

Do not rely on the mini-CD that came with your DS150E. Those discs often contain malware or entirely broken drivers. Instead, download: