Right-click the unrecognized device in and select Properties . Go to the Details tab. Click the property dropdown and select Hardware Ids . Look at the VID (Vendor ID) and PID (Product ID) codes: VID 0403 : This is an FTDI chip. VID 067B : This is a Prolific chip.
Before downloading any drivers, find out which chip your cable uses: Plug the cable into your PC. Right-click the button and select Device Manager .
Verify your terminal software matches standard console settings:
Based on common issues, the cable likely uses the Silicon Labs CP210x chipset. Here are the necessary download sources: awm 20251 console cable driver download fix
Click . Select the older version from the list and click next. Fix B: Com Port Number Too High
Even after downloading the driver, you might encounter specific errors that prevent your terminal emulator (like PuTTY or Tera Term) from opening the port.
Method B: Manual Driver Download & Installation (Most Reliable) Right-click the unrecognized device in and select Properties
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Once Device Manager shows the cable clearly under without any yellow triangles, take note of the assigned port number (e.g., COM3 ).
当你确定需要降级驱动时，可以按照以下步骤操作，无需依赖外部工具也能顺利完成： Look at the VID (Vendor ID) and PID
Visit the FTDI VCP Drivers page . Download the Windows "Setup Executable" for an easy fix.
Very rarely, an AWM 20251 cable may have a CH340 or counterfeit FTDI chip. If none of the Prolific drivers work:
Windows will force this driver to load, which usually fixes the Code 10 error . 4. Finalizing Configuration (Using PuTTY or Tera Term)