If Windows shows a "USB Serial Controller" with a yellow exclamation mark in Device Manager AWM 20251 Telephone Cable | Allied Wire and Cable
WCH has released an updated signed driver for the CH340 series. This update is critical for users on macOS Sonoma and Sequoia, as older drivers lacked the necessary security certificates for Apple Silicon (M1/M2/M3). How to Install the Updated Driver Open Device Manager on your PC.
Download the latest driver package.
AWM 20251 Console Cable Driver Updated: Comprehensive Guide for 2026
. It may appear as "USB-Serial Controller" or "UART Bridge". Update Manually: Right-click the device and select Update driver Search automatically for drivers If that fails, choose Browse my computer for drivers awm 20251 console cable driver updated
For console cables, the "AWM 20251" designation refers to the Underwriters Laboratories (UL) wiring style (Silver Satin telephone-style flat cable) rather than a specific electronic driver. To update your connection in 2025, you must identify the chipset embedded in the USB-to-Serial connector, which is typically manufactured by FTDI or Silicon Labs . Recommended Driver Updates (2025-2026)
This VID/PID information confirms the chipset and, therefore, the correct driver family to install. If Windows shows a "USB Serial Controller" with
So, when you have an "AWM 20251 console cable," you're holding a cable whose physical wiring meets a set of approved safety and performance specifications.
If you are on Windows 10 or 11, you might be encountering an error in Device Manager that says Download the latest driver package