Usb Vid-0fe6 Amp-pid-9900 ((install)) Page

When combined, represents a budget USB-to-Ethernet (RJ45) dongle. These inexpensive adapters are widely used to add a wired network port to laptops, tablets, or desktop computers that lack a built-in Ethernet port. Why is the Device Showing an Error?

USB Ports Not Working on Windows: Solve Common USB Issues | Dell US

This specific hardware is known for "mode-switching" behavior or requiring specific proprietary drivers to function correctly. Manjaro Linux Forum Linux Support:

Click and check the box for Delete the driver software for this device . Unplug the adapter. Restart your computer. usb vid-0fe6 amp-pid-9900

Windows might flag this device with a yellow exclamation mark or list it as an "Unknown Device" for several reasons:

Most modern operating systems, including , often include generic drivers that allow this device to work immediately upon plugging it in. However, if the device appears as "Unknown Device" in your Device Manager , you may need to install specific drivers.

Some users have reported random disconnections on Linux, even though the device remains visible in the lsusb command. This is often related to the USB power management (autosuspend) settings. You can often fix this by creating a udev rule to disable autosuspend for the device. USB Ports Not Working on Windows: Solve Common

Similar to Linux, macOS natively supports this class of USB Ethernet device. It is generally considered driver-free and should work automatically when plugged in.

: A surprising but common fix is simply turning off the computer's Wi-Fi. At least one user reported that having Wi-Fi enabled while using this USB ethernet adapter caused conflicts, and disabling Wi-Fi resolved the random disconnections completely. This is a simple and effective first troubleshooting step.

Before we address the specific code 0FE6:9900 , it is essential to understand the nomenclature. Restart your computer

The device is compatible with most major operating systems. If your system does not recognize it automatically, you may need to install specific drivers:

: This distinct code specifies the production model, which is the SR9900 Fast Ethernet controller .

Modern operating systems handle this hardware differently depending on their built-in driver libraries. Windows 10 and Windows 11

Replug the adapter into a different USB port to force a clean hardware scan.