Go to the official website and navigate to the VCP Drivers (Virtual COM Port) section.
Detailed Instructions: * Go to the Silicon Labs website (link above) and downloaded the CP210x_Universal_Windows_Driver. zip file. Cisco Community
: If it still shows an error, use the executable installer from the FTDI website
: Replace the cable with a CH340-based USB-to-console cable (e.g., "USB to RJ45 console cable CH340") or an original Cisco console cable (with FTDI chip). Cheap "AWM 20251" cables often use counterfeit Prolific chips that Microsoft intentionally blocks in newer Windows versions. awm 20251 console cable driver download fix
The AWM 20251 text on your cable is actually the material rating, not the chip brand.
Ultimate Guide to Fix AWM 20251 Console Cable Driver Issues Connecting to a router, switch, 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.
Some legacy software (like old versions of PuTTY) can’t "see" COM ports higher than COM4. Go to the official website and navigate to
When the driver fails, your computer cannot talk to your network switches or routers.
I can guide you to the exact download link or help you troubleshoot a stubborn legacy installation. Share public link
Tell me if you need help with , configuring your terminal emulator settings , or rolling back a prolific code 10 error . Share public link Cisco Community : If it still shows an
If you see a yellow triangle or the device still appears in "Other devices," the driver did not install correctly. Try removing the device (right-click > Uninstall device), unplugging the cable, restarting your PC, and starting the driver installation process over from the beginning.
PL2303 芯片的情况相对复杂。为了打击市场上的盗版芯片，Prolific 公司在新版 Windows（特别是 Win10 和 Win11）的官方驱动中加入了对旧款 PL2303 HXA（及更老版本）芯片的限制策略，导致这些芯片更新官方驱动后，直接触发 错误：该设备无法启动。
The AWM 20251 driver issue is a misnomer derived from confusing regulatory markings with model numbers. Resolution requires ignoring the "AWM" label and focusing on the Device Hardware ID. By identifying the underlying chipset—typically Prolific, CH340, or CP2102—and installing the specific legacy or vendor driver, full console connectivity is restored.
While these cables are essential for console access, Windows frequently fails to install the drivers automatically, resulting in the cable not being recognized, a yellow exclamation mark in Device Manager, or the infamous "COM Port Not Found" error.