Amp-pid-9900 [upd] — Usb Vid-0fe6

USB VID 0FE6 / PID 9900 — Overview & Details

Part 1: What Are VID and PID? Understanding the Basics

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

• VID (Vendor ID): A 16-bit number assigned by the USB Implementers Forum (USB-IF) to a specific manufacturer. No two companies share the same VID.
• PID (Product ID): A 16-bit number assigned by the manufacturer to a specific product line. For example, a company might use PID 0001 for a keyboard and 0002 for a mouse.

When you see VID_0FE6&PID_9900, it breaks down as follows:

• VID: 0FE6 (Hexadecimal number 0FE6)
• PID: 9900 (Hexadecimal number 9900)

The ampersand (&) and underscore (_) are formatting conventions used by Windows operating systems to denote the hardware ID string. usb vid-0fe6 amp-pid-9900

5. Common problems & fixes

| Problem | Solution | |---------|----------| | Driver installs but no network | Try a different USB port (avoid USB hubs). Check if adapter gets warm — if not, USB port may not supply enough power. | | Code 10 (device cannot start) | Uninstall the device from Device Manager, unplug, restart PC, then reconnect. | | Works on one PC but not another | Likely driver signing issue on newer Windows. Disable driver signature enforcement temporarily (Windows 10/11: Shift + Restart → Troubleshoot → Startup Settings → Disable driver signature enforcement). | | Shows as "ASIX" device | Some generic drivers misidentify it. Uninstall ASIX driver and force install DM9601 driver manually. |

Where to find more info

• Search the exact VID:PID string ("VID_0FE6&PID_9900" or "0fe6:9900") plus any model printed on the device or packaging.
• Look up O2Micro support pages and OEM product support for device-specific drivers, firmware, and manuals.

If you want, I can:

• Parse a device string you provide (e.g., from Device Manager or lsusb) and give likely device types; or
• Run targeted web searches for this VID:PID and return summarized results.

The identifier VID 0FE6 & PID 9900 refers to the Corechip SR9900 USB 2.0 to Fast Ethernet Adapter

. This device is a budget 10/100 Mbps LAN dongle often used to add wired networking to laptops or small single-board computers. Arch Linux Forums Driver Installation Guide USB VID 0FE6 / PID 9900 — Overview

Because this chipset is not always automatically recognized by modern operating systems, you may need to install drivers manually. For Windows (7, 8, 10, 11)

Part 6: Advanced Troubleshooting

If you have installed the driver but the device still fails, consider the following: VID (Vendor ID): A 16-bit number assigned by

1. The Generic USB 2.0 to Ethernet Adapter

This is the most common culprit. The adapter typically features:

• A USB-A male connector on one end.
• An RJ45 (Ethernet) female port on the other end.
• A small plastic casing, often black or white, with a green or blue LED link light.

Option B: Driver for RD9700 (Realtek clone)

Many adapters using 0FE6:9900 are actually compatible with the RD9700 driver.

• Source: Realtek official website or the chip vendor's support page.
• Note: Windows 10/11 may still require the driver to be manually installed via "Have Disk."

Key details:

• Vendor: LevelOne (VID 0x0FE6)
• Product: USB-0401 Fast Ethernet Adapter (PID 0x9900)
• Chipset: Davicom DM9601 (or DM9602 compatible)
• Type: USB 1.1 / 2.0 10/100 Mbps Ethernet adapter