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Usb Vid-0fe6 Amp-pid-9900 Site

Decoding the USB Mystery: Everything You Need to Know About VID 0FE6 & PID 9900

If you’ve ever dived into your Device Manager and found a mysterious "Unknown Device" or a hardware ID labeled USB\VID_0FE6&PID_9900, you’ve likely stumbled upon one of the most common yet confusing budget peripherals on the market. This specific combination identifies the Corechip SR9900 USB 2.0 to Fast Ethernet Adapter

. It’s a tiny piece of hardware often rebranded by dozens of different manufacturers, making it a "ghost" device that appears under many names but uses the same internal silicon. What Exactly Is This Device? The

(Vendor ID) belongs to Corechip Semiconductor (sometimes listed as ICS Advent in Linux databases). The (Product ID) specifically designates their SR9900 Fast Ethernet controller.

Function: It is a 10/100 Mbps Ethernet adapter that plugs into a USB 2.0 port.

Common Use Cases: It’s frequently used with slim laptops (like the Lenovo IdeaPad or ASUS VivoBook) that lack a built-in LAN port, as well as Nintendo Switches, Raspberry Pis, and Android TV boxes.

Performance: Don't expect Gigabit speeds. This chip is capped at 100 Mbps because it operates on the older USB 2.0 standard. The Driver Dilemma: How to Get It Working

Because these are generic devices, Windows doesn't always have the driver pre-installed. If your adapter isn't connecting, you likely need the sr9900.inf driver file.

The USB VID 0FE6 PID 9900 identifies a Corechip SR9900 USB 2.0 to Fast Ethernet Adapter. This device is a common, low-cost "10/100M" network dongle often sold under brands like ICS Advent or generic labels. 🛠️ Quick Setup Guide 1. Windows Installation

Most modern versions (Windows 10/11) should detect this automatically as a CDC Ethernet or Corechip SR9900 device.

Automatic: Plug it in and wait 60 seconds for Windows Update to find the driver.

Manual: If it shows as an "Unknown Device" or a "CD-ROM Drive," you can download the 2.0.5.0 driver from hardware archive sites like DriverMax or DriverIdentifier.

Note: If it appears as a drive, it likely has internal storage with driver files. Open the "drive" in File Explorer and run the .exe inside. 2. Linux Setup usb vid-0fe6 amp-pid-9900

In Linux, this chip typically uses the cdc_ether or sr9700 kernel module.

Check Detection: Run lsusb in the terminal. You should see ID 0fe6:9900 ICS Advent 10/100M LAN.

Force Driver: If the interface (e.g., eth0 or enp0s...) doesn't appear, try loading the module manually: sudo modprobe cdc_ether Use code with caution. Copied to clipboard

Troubleshooting: If the device identifies as 0fe6:9702, it is in "storage mode." You may need to use usb_modeswitch to flip it to network mode. 3. Troubleshooting Performance

Speed Limit: This is a USB 2.0 device capped at 100 Mbps. Even if plugged into a USB 3.0 port, it will not reach Gigabit speeds.

Connection Drops: These adapters are known to run hot. If you lose connection, unplug it for 10 seconds and reinsert.

Cable Check: Ensure you are using at least a Cat5e Ethernet cable for a stable 100Mbps link.

💡 Pro Tip: If you see "No Connection" even with drivers installed, check if the MAC address is being reported as all zeros (00:00:00:00:00:00). This is a common firmware bug in cheap clones. Configuring a static IP for this adapter? Fixing the "USB device not recognized" error?

The identifier usb vid-0fe6 & pid-9900 (often written as VID_0FE6&PID_9900) refers to a specific USB device: a USB 2.0 to Ethernet adapter using the DM9601 chipset (Davicom).

Here is a complete guide to identifying, finding drivers, and troubleshooting this device.

Step 2: Download the Correct Driver

Do not use automatic "driver updater" tools. They are often malware. Use these verified sources:

Replace it if:

  • You are using Windows 10/11 and want "plug and play."
  • You need Gigabit speed (look for VID 0BDA (Realtek) or VID 10EC).
  • You want to use this on a modern Mac.

Part 4: How to Fix Driver Issues for VID_0FE6&PID_9900

Here is the definitive, step-by-step guide to getting your device working. Follow these in order. Decoding the USB Mystery: Everything You Need to

3. Driver Support

Driver support:

  • Linux: dm9601 driver (built into most kernels)
  • Windows: Drivers available from LevelOne or Davicom (usually required manually, not auto-installed on modern Windows)
  • macOS: May need third-party driver or may work with older versions

If you're troubleshooting, try loading the dm9601 module on Linux or installing the LevelOne USB-0401 driver on Windows. This adapter is often used in older embedded systems, industrial PCs, or as a backup network interface.

The USB device with VID 0FE6 and PID 9900 is commonly identified as a Corechip Semiconductor USB-to-Ethernet adapter or a generic "USB 2.0 10/100M Ethernet Adapter." Identifying the Hardware

Vendor ID (VID): 0fe6 – Registered to Corechip Semiconductor, Inc. (sometimes seen as JP-Corechip).

Product ID (PID): 9900 – Specifically refers to their USB 2.0 10/100M Ethernet Adapter.

Common Use: These chips are typically found in inexpensive, unbranded USB Ethernet dongles often used for laptops without a built-in LAN port or for DIY projects like Raspberry Pi networking. Technical Profile

This device is a basic networking bridge. While it provides essential connectivity, it has specific limitations:

Interface: USB 2.0 (High Speed), meaning its maximum theoretical throughput is capped by the USB bus (480 Mbps), though the hardware itself is usually a 10/100 Mbps Ethernet controller.

Standard Compliance: It typically complies with IEEE 802.3 (10Base-T) and 802.3u (100Base-TX) standards.

Chipset Variations: While the VID/PID points to Corechip, the physical dongle might be marketed under various generic brand names found on Amazon or eBay. Driver & Compatibility

Because this is a common generic chipset, most modern operating systems handle it with "plug-and-play" drivers:

Windows: Usually automatically detected as a "Corechip" or "RD9700" device. If it fails, users often look for "SR9900" or "QF9700" driver packages.

Linux: Supported by the dm9601 or asix kernel modules depending on the specific revision, though it is often listed in the Linux USB ID database as a standard network device. You are using Windows 10/11 and want "plug and play

macOS: May require manual driver installation on newer versions (Catalina and later) due to stricter kernel extension policies. Performance Note

These adapters are known for being budget-friendly but may experience higher CPU overhead than premium brands like Realtek or ASIX. They are ideal for steady 100 Mbps connections but are not suitable for Gigabit-speed environments. Linux usb.ids # Vendors, devices and interfaces. Please keep sorted. List of USB ID's by Stephen J. Gowdy - USBDev.ru

The USB hardware ID refers to a Corechip SR9900 USB 2.0 to Fast Ethernet Adapter

. This device is a compact network adapter used to provide a wired 10/100 Mbps Ethernet connection to computers lacking a built-in RJ45 port, such as modern thin laptops or tablets. Arch Linux Forums Hardware Identity Vendor ID (VID): (Associated with ICS Advent Product ID (PID): (Identified as the Manufacturer: CoreChips. Device Class: 10/100M Fast Ethernet. Driver Compatibility

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

The hardware identifier USB\VID_0FE6&PID_9900 corresponds to the Corechip SR9900 USB 2.0 to Fast Ethernet Adapter. This compact peripheral allows devices without a built-in Ethernet port to connect to wired networks, providing a more stable connection than Wi-Fi. Device Overview and Technical Specifications

The Corechip SR9900 is a specialized network controller designed to bridge a USB 2.0 interface with a standard 10/100 Mbps Fast Ethernet network.

Vendor ID (VID) 0FE6: Registered to ICS Advent or Corechip for various networking components.

Product ID (PID) 9900: Specifically identifies the SR9900 model.

Interface: Operates over USB 2.0, though it is backward compatible with USB 1.1 ports.

Max Speed: Supports data transfer rates up to 100 Mbps (Fast Ethernet). System Compatibility and Driver Support

This adapter is widely utilized in modern laptops—such as the ASUS VivoBook S15, Lenovo IdeaPad 110, and HP Pavilion X360—that lack dedicated LAN ports.

Part 2: The Hardware Behind USB VID-0FE6 & PID-9900

If you are seeing this identifier, you likely own one of the following devices:

3. The Use Case: The "Office Survival" Tool

Why keep one of these in your toolkit?

  • Broken Ports: It is a cheap fix for a laptop with a fried ethernet port.
  • Thin Clients: Many ultra-books lack RJ45 ports; this is smaller and cheaper than a dongle.
  • Pi and SBCs: It works on Raspberry Pi Zero or other SBCs where you need a wired connection and don't have a native Ethernet jack.