Download the for your architecture (x64/x86). Unzip the file. Run ftdichip.exe or dpinst.exe . Restart your computer. Solution B: Silicon Labs Driver
Many users mistake "AWM 20251" for the brand or model of the cable. When the cable fails to work, they search for an "AWM 20251 driver download."
If after all three methods your AWM 20251 console cable still shows no signs of life (no COM port, no response from a router’s console), the internal chip may be physically damaged. Symptoms: awm 20251 console cable driver download fix
This guide will help you identify the correct chipset inside your cable, download the official drivers, and fix common connection errors. Step 1: Identify Your Actual Cable Chipset
After the driver is fixed, ensure your software is configured to talk to the cable: 9600 (Standard for Cisco/Console). Data bits: 8 Stop bits: 1 Parity: None Flow Control: None Summary Checklist Potential Solution Yellow Exclamation Mark Install Prolific/FTDI Driver Code 10 Error Roll back to an older driver version No COM Port assigned Change USB ports or check "Hardware IDs" Garbage Text in PuTTY Match the Baud Rate (usually 9600 or 115200) Download the for your architecture (x64/x86)
Avoid "driver update" websites. Always download directly from the chip manufacturer:
For Prolific Code 10 on older Windows 10 builds (1809 and earlier): Restart your computer
Open your terminal software (PuTTY) and apply the standard Cisco console settings: : Serial Serial Line : COM3 (Match your assigned port) Speed (Baud Rate) : 9600 Data bits : 8 Stop bits : 1 Parity : None Flow Control : None
Connecting to a Cisco switch, router, or firewall often requires a console cable. If you look closely at the insulation of many common USB-to-RJ45 console cables, you will see the text printed on the wire.
Try a different USB port, reboot, or check if the cable is in “flashing mode” (some cheap cables require shorting two pins).