Many AWM 20251 cables sold on eBay/Amazon are counterfeit Prolific chips.
If you tell me which operating system you have (Windows version, 32/64-bit, or macOS/Linux), and what error message Device Manager shows (if any), I can narrow down the exact driver version for you.
This guide is designed to help network engineers and IT technicians identify the correct driver for their specific cable hardware, as "AWM 20251" refers to the cable quality standard, not the specific chipset model required for your computer.
If you are holding a USB console cable with the label AWM 20251 (often associated with brands like Cisco, TrendNet, or generic "Cisco Compatible" cables) and your computer isn't recognizing it, you likely need the correct driver.
This is a very common issue with network engineering gear. Below is the direct solution to get your cable working.
Struggling to connect your router, switch, or firewall via the console port? You are likely holding an AWM 20251 cable. This thin blue cable is a staple for network engineers, yet it remains one of the most frustrating pieces of hardware to set up—mainly due to driver issues. In 2026, while most hardware is plug-and-play, older chipsets in these cables still require manual intervention.
This article provides a definitive, step-by-step guide to downloading, installing, and troubleshooting the AWM 20251 Console Cable Driver on Windows 11, Windows 10, macOS, and Linux.
Review:
The AWM 20251 console cable is a common USB-to-RS232 (or TTL) serial adapter used for networking equipment (Cisco, routers, switches). However, the driver download process is where most users run into trouble.
Tip: If you get a yellow exclamation mark, uninstall the driver, disconnect the cable, then install Prolific PL2303 driver v3.3.2.105 (or v3.8.x for newer chips). On macOS/Linux, it works natively with screen or minicom.
Verdict: The cable is fine for the price, but the driver hunt can be frustrating. Keep a known-good driver saved locally.
I understand you're looking for the driver for the AWM 20251 console cable (often used for Cisco routers/switches, firewalls, or other network devices).
However, I can’t provide direct download links to drivers from unofficial or unverified sources because that could lead to malicious files. Instead, I’ll give you a structured, safe guide to finding and installing the correct driver for the AWM 20251 USB to RS-232 serial console cable.
The AWM 20251 designation on your console cable is a technical specification for the physical wiring (Appliance Wiring Material) rather than the model of the internal communication chip. To download the correct driver, you must identify the chipset inside the cable's USB connector, which is typically manufactured by FTDI, Prolific, or Silicon Labs. 1. Identify Your Chipset
Before downloading, plug the cable into your computer and check Device Manager (Windows) or System Information (Mac):
FTDI (Most Common): Often appears as "USB Serial Port" or "FT232R USB UART".
Prolific: Usually labeled as "Prolific USB-to-Serial Comm Port" (e.g., PL2303).
Silicon Labs: Typically shows as "CP210x USB to UART Bridge". 2. Official Driver Download Links Awm 20251 Console Cable Driver Download
Once identified, use the official manufacturer sites to ensure stability and security:
FTDI Chip Drivers: Most modern Windows (10/11) and macOS systems include these drivers automatically. If yours is not recognized, download the VCP (Virtual COM Port) drivers from the FTDI Driver Page.
Prolific Drivers: If your cable uses a Prolific chip, download the latest installer from the Prolific Support Page.
Beware of "Code 10" errors on older Prolific cables; these often require a specific older driver version if the chip is a clone. Silicon Labs Drivers: For CP210x chipsets, the Silicon Labs CP210x Universal Driver is the standard for Windows and Mac. USB-TO-RJ45-Console-Cable - Waveshare Wiki
The AWM 20251 designation refers to the physical cable specification (often a flat "silver satin" telephone or serial cable) rather than a specific driver. To get your console cable working, you need the driver for the USB-to-Serial chipset embedded inside the USB connector. 1. Identify Your Chipset
Most modern console cables (USB to RJ45) use one of three major chipsets. You can identify yours by plugging it in and checking Device Manager (Windows) or System Information (Mac) for the "Hardware ID".
FTDI (Most Common/Recommended): Known for the FT232RL chip. It is widely used in high-quality cables like the Feanteek USB Console Cable Go to product viewer dialog for this item.
Prolific: Uses the PL2303 series. Common in budget-friendly options. Silicon Labs: Uses the CP210x series. 2. Official Driver Download Links
Always download drivers from the official manufacturer to avoid security risks:
FTDI Drivers: Download the VCP (Virtual COM Port) drivers from the FTDI Chip official site. Prolific Drivers: Available on the Prolific Technology Inc. support page. Silicon Labs Drivers: Download the CP210x USB to UART Bridge VCP Drivers 3. Popular Pre-Built Console Cables
If you are looking for a reliable replacement cable that is often "plug-and-play" on Windows 10/11, consider these options: Feanteek USB Console Cable ₹2,102.00 amazon.in& more Go to product viewer dialog for this item.
Features an FTDI chip and is compatible with Cisco, Juniper, HP, and TP-Link devices. UGREEN USB to RJ45 Console Cable ₹1,555.00 TeckPot& more Go to product viewer dialog for this item.
A durable 1.5m cable that typically doesn't require additional drivers for modern OS versions. COOLCOLD USB Console Cable
A budget-friendly 1.5m adapter designed for Cisco router and switch management. Quick Setup Steps
Install the driver first: Do not plug in the cable until the driver installation is complete.
Plug in the cable: Windows should now recognize it as a USB Serial Port (COMX). Many AWM 20251 cables sold on eBay/Amazon are
Configure software: Open a terminal emulator like PuTTY or SecureCRT, select "Serial," and enter the correct COM port number (usually at a speed of 9600 baud). Properly Installing Cisco USB Console Driver
To get your AWM 20251 console cable up and running, you first need to identify which internal chipset it uses. "AWM 20251" is actually a specification for the outer wire
itself, not the electronic driver. Most modern console cables use one of three main chipsets that handle the USB-to-Serial conversion. 1. Identify Your Chipset Plug the cable into your computer and check Device Manager (Windows) under "Ports (COM & LPT)" or "Other devices."
: The most common for premium cables (e.g., Cisco, Waveshare). Prolific (PL2303) : Common in budget or generic cables. Silicon Labs (CP210x)
: Often used in networking hardware like Aruba or Silicon Labs bridges. 2. Download Official Drivers
Always use official manufacturer sites rather than third-party download portals to ensure security and stability. For FTDI Chips
: Most Windows 10/11 systems install these automatically via Windows Update. If they don't, download the VCP (Virtual COM Port) drivers from FTDI Chip For Prolific Chips : Download the latest PL2303 drivers from the Prolific Support Page For Silicon Labs Chips CP210x USB to UART Bridge VCP Drivers 3. Quick Installation Steps Drivers - FTDI
AWM 20251 Console Cable Driver Download: The Ultimate Setup Guide
If you’ve recently purchased a console cable for networking tasks—likely for configuring a Cisco switch, router, or firewall—you probably noticed the technical markings on the cable jacket: AWM 20251.
Getting this cable to talk to your Windows or Mac computer is often the most frustrating part of the job. This guide will help you identify the correct driver, download it safely, and get your terminal session up and running. What is an AWM 20251 Cable?
It is important to clarify that AWM 20251 is not actually the model number of the cable or the chip inside. It is a UL (Underwriters Laboratories) rating for the physical wire itself, indicating its heat resistance and voltage capacity.
However, 99% of cables marked with AWM 20251 are USB-to-RJ45 Console Cables. Inside the USB connector is a small bridge chip that converts USB signals to Serial (RS232). To make it work, you need the driver for that specific chip. Step 1: Identify Your Chipset
Before downloading anything, you need to know which driver you actually need. Most of these cables use one of two manufacturers:
FTDI (Future Technology Devices International): The gold standard. Very stable and often works automatically with Windows 10/11.
Prolific (PL2303): Very common in budget cables. Requires specific drivers to avoid the "Code 10" error. How to check: Plug the cable into your PC. Right-click the Start button and select Device Manager. Look under Ports (COM & LPT) or Other Devices.
If you see "USB Serial Port" or "PL2303," you’ve found your culprit. Step 2: Download the Correct Drivers For FTDI Chips (Most Common) If you tell me which operating system you
If your cable uses an FTDI chip, do not download drivers from third-party "driver fix" websites. Go straight to the source. Official Link: FTDI VCP Drivers
What to look for: Choose the "Windows (Desktop)" executable or the "Mac OS X" version depending on your machine. For Prolific (PL2303) Chips
Prolific cables are notorious for driver issues, especially if the cable is an older version. Official Link: Prolific Support
Installation Tip: If you are on Windows 11 and the official driver doesn't work, you may need to "Roll Back" the driver to an older version (2008 or 2012) to maintain compatibility. Step 3: Installation and Configuration
Run the Installer: Unplug the cable, run the downloaded .exe or .pkg file, and follow the prompts.
Plug in the Cable: Once the installation finishes, plug the USB end into your computer.
Confirm the COM Port: Go back to Device Manager. You should now see something like USB Serial Port (COM3). Note that number (COM3, COM4, etc.).
Open Your Terminal: Use a program like PuTTY, Tera Term, or SecureCRT. Connection Type: Serial Serial Line: COM3 (or your specific number) Speed (Baud): 9600 (Standard for Cisco devices) Troubleshooting Common Issues
"Device Cannot Start (Code 10)": This usually happens with Prolific cables. It means the driver version is too new for the physical chip. Try installing an older version of the PL2303 driver.
No COM Port Assigned: Try a different USB port on your laptop. Avoid using USB hubs; plug the cable directly into the machine.
Garbage Characters in Terminal: This isn't a driver issue—it's a speed issue. Ensure your Baud rate is set to 9600. If that fails, try 115200. Conclusion
While "AWM 20251" is just a label for the wire's insulation, it almost always points toward an FTDI or Prolific USB-to-Serial converter. By identifying the chipset in your Device Manager and downloading the official manufacturer drivers, you can bypass the headache of "Unknown Device" errors and get back to configuring your network.
Some older CH340 drivers are not signed. To install:
Even after downloading the correct driver, you may encounter issues. Here is a systematic diagnostic guide.
| Symptom | Likely Cause | Solution |
|--------|--------------|----------|
| "Unknown Device" in Device Manager | No driver installed or VID/PID not recognized | Re-run the correct chipset driver as admin |
| Code 10 (Device cannot start) – Prolific | Counterfeit PL2303 or outdated driver | Use Prolific Driver v3.3.2.105 (for legacy chips) or replace cable |
| Code 10 – CH340 | Driver signature enforcement blocking | Disable signature enforcement or install signed driver from WCH |
| COM port appears but no data in terminal | Wrong baud rate or flow control | Set to 9600/8/N/1, no flow control. Try 115200 for newer gear |
| Works on one PC but not another | Missing driver on second PC | Repeat installation steps |
| macOS: "Driver not loaded because it is not from an identified developer" | Gatekeeper blocking FTDI/Prolific driver | Go to Security & Privacy > Allow anyway |
| Linux: Device not appearing as /dev/ttyUSB0 | brltty service conflict (common on Ubuntu) | Run sudo apt remove brltty and reboot |