The manufacturer does not maintain a pretty website. Here are the three reliable sources for the driver.
| Issue | Fix | |-------|-----| | Adapter not detected | Try different USB port (preferably USB 3.0) | | Code 10/Code 31 error | Uninstall device in Device Manager → Scan for hardware changes | | No internet after install | Disable/re-enable adapter in Network Settings |
Note: If the adapter is a generic no-name brand, try the Realtek USB FE Family Controller driver via Windows Update (optional updates).
Here are a few ways to rewrite that text into a proper sentence, depending on what you need:
Option 1: A complete, grammatically correct sentence (Best for general use)
"I am looking for the USB to LAN driver for the QTS1081B on Windows 11."
Option 2: A concise search query (Best for Google or YouTube)
"QTS1081B USB to LAN Driver Windows 11"
Option 3: A professional subject line (Best for an email)
"Request: QTS1081B USB to LAN Driver for Windows 11"
Note: The QTS1081B is a generic chipset often found in USB network adapters. If you are searching for the file, you might also have luck searching for the term "Corechip" or "SR9900", as those are the common driver names associated with this specific hardware.
QTS1081B USB to LAN adapter is a budget-friendly, often unbranded device used to add a 10/100 Mbps Ethernet port to computers. While widely available on platforms like AliExpress
users frequently report difficulty finding official drivers for Windows 11 because it often uses generic chipsets like the Microsoft Learn Installation Report: QTS1081B on Windows 11 1. Identify the Hardware ID
If Windows 11 does not automatically recognize the device, you must identify its specific chipset to find the correct driver. Right-click and select Device Manager
Look for an "Unknown Device" or a device with a yellow warning icon under Network adapters Other devices Right-click it → Properties Hardware Ids from the dropdown. Common IDs for this device often include USB\VID_0FE6&PID_9700 Microsoft Learn 2. Manual Driver Installation Steps
Since there is no "official" manufacturer website for many of these adapters, use the manual update method: QTS1081B adapter driver - Microsoft Q&A
The QTS1081B USB to Ethernet adapter (often labeled as an RD9700 chipset device) is a common, budget-friendly solution for adding a wired LAN port to modern laptops that lack one. While Windows 11 often fails to recognize these "off-brand" adapters automatically, they can be made functional by installing the correct Corechip RD9700 drivers. Understanding the QTS1081B Adapter
This device is a USB 2.0 to 10/100M Ethernet converter. It is typically unbranded and may appear in your Device Manager as an "Unknown Device" or "USB 2.0 10/100M Ethernet Adapter" with a yellow caution icon. Because it uses the Corechip RD9700 chipset, standard Windows Update searches often cannot locate the specific driver files needed for high-speed operation. How to Install the Driver on Windows 11
If your adapter isn't working plug-and-play, follow these steps to manually install the driver. 1. Locate the Correct Driver
Microsoft Update Catalog: Search for "Corechip" on the Microsoft Update Catalog. Download the version compatible with x64 systems.
Third-Party Sources: Reliable archives like OEMDrivers host the 1.00.0906.0 version, which is verified to support Windows 11.
Realtek Alternatives: Some versions of this hardware are compatible with Realtek's USB FE Auto Installation Program. 2. Manual Installation via Device Manager
Since many of these drivers come as .cab or .zip files rather than executable installers, you must install them manually:
This report provides an overview of the QTS1081B USB to LAN/Ethernet Adapter and its driver installation process on Windows 11.
(sometimes identified as RD9700) is a generic USB 2.0 to RJ45 Ethernet network adapter designed for 10/100M networking. It is frequently used to add a wired network port to laptops or tablets that lack one. Due to its generic, often unbranded nature, it can be challenging to find official drivers. Microsoft Learn Windows 11 Driver Status Automatic Installation:
Windows 11 often fails to install the driver automatically via Windows Update. Compatibility: i--- Driver Usb To Lan Qts1081b Windows 11
While the hardware works, the driver often requires manual installation because the device uses older chipset technology. Driver Identification:
In Device Manager, the adapter may appear as "USB 2.0 to 10/100M Ethernet Adaptor" or under "Other Devices" with a yellow exclamation mark. Microsoft Learn How to Install Drivers on Windows 11
If the device is not recognized, follow these steps to install the driver: Locate Driver:
Look for a driver labeled "RD9700" or "QTS1081B" for Windows 10/11. Often, these drivers are provided in older community forums or from manufacturer sites, but they are generally generic. Unzip/Extract: Extract the downloaded driver files. Device Manager: Device Manager (right-click Start > Device Manager). Update Driver: Locate the device, right-click, select Update driver , and choose "Browse my computer for drivers". Locate Folder:
Point the installer to the unzipped driver folder containing the file (ensure you select the 64-bit folder if prompted). Alternative:
Some users have reported success by searching online for "RD9700Driver" and using the installation folder provided in those contexts. Microsoft Learn Troubleshooting & Known Issues USB Device Descriptor Failed:
If this error appears in Device Manager, the adapter might be faulty or improperly connected. Connection Speed:
Because it is a USB 2.0 device, speeds are limited to 100Mbps, and it may not support Gigabit ethernet. Alternative Solutions:
If driver issues persist, it is strongly recommended to purchase an adapter with a more modern chipset (like Realtek) that offers official, plug-and-play support for Windows 11. ComX Computers
Disclaimer: As this is an unbranded, generic product, drivers found online should be scanned for malware before installation. QTS1081B adapter driver - Microsoft Q&A
A: Yes, provided you download it from a reputable mirror (like GitHub or Station-Drivers) and scan it with Windows Defender. Avoid random EXE download sites.
In an era where ultrabooks and modern laptops shed ports like dead weight—first the Ethernet jack, then USB-A, now even the headphone jack—the humble USB-to-LAN adapter has become an essential survival tool. For IT professionals, home lab enthusiasts, and remote workers, a reliable dongle is the difference between a stable, low-latency connection and the unpredictable whims of Wi-Fi.
Enter the QTS1081B. It’s a name that won’t appear on slick Apple store shelves. You’ll find it embedded in no-name dongles, old stock from server pulls, or generic adapters labeled "USB 2.0 to RJ45 Ethernet." On paper, it’s a workhorse: cheap, ubiquitous, and powered by a chipset found in millions of devices. But in practice? Installing a QTS1081B driver on Windows 11 can feel like trying to fit a square peg into a round hole.
This feature explores why this chipset breaks under Windows 11, how to diagnose the problem, and the step-by-step fixes to resurrect your adapter.
The i--- Driver for USB to LAN QTS1081B on Windows 11 is a classic case of cheap hardware meeting modern security. The good news is that with manual installation, temporary driver signature enforcement bypass, and the correct INF file, you can get your $5 adapter working perfectly.
Quick Recap to get online now:
Don't let a missing driver ruin your day. Follow this guide, and that yellow exclamation mark will be gone in ten minutes.
Last Updated: November 2025
Tested On: Windows 11 Pro (23H2 & 24H2), QTS1081B v3.2 hardware
Have a different chipset? Leave your Hardware ID in the comments below.
Disclaimer: "i---" refers to an unidentified USB network controller. All trademarks are property of their respective owners. This guide is for educational purposes.
Visit the Microsoft Update Catalog and search for "Corechip".
Download the version labeled for Windows 10/11 (often distributed as a .cab cabinet file). Extract the Files:
Open the downloaded .cab file, copy all contents, and paste them into a new folder on your desktop (e.g., "Ethernet_Driver"). Update via Device Manager: Right-click the Start button and select Device Manager.
Find your adapter (it may have a yellow caution icon) under Other devices or Network adapters. Right-click it and select Update driver.
Choose "Browse my computer for drivers" and select the folder where you extracted the files. Finalize:
Click Next to complete the installation. You may need to restart your computer. Alternative: Automated Search The manufacturer does not maintain a pretty website
If you have an existing internet connection (via Wi-Fi), you can try letting Windows find it:
In Device Manager, right-click the adapter and select Update driver > Search automatically for drivers.
If no driver is found, check Windows Update > Advanced options > Optional updates, as hardware drivers are often tucked away there. QTS1081B adapter driver - Microsoft Q&A
The QTS1081B is a compact USB 2.0 to Fast Ethernet adapter based on the Corechip SemiConductor RD9700 chipset. It is primarily used to provide a wired network connection for laptops, tablets, or gaming consoles that lack a built-in RJ45 port. Key Features
Network Speed: Supports 10/100 Mbps auto-sensing and auto-negotiation.
Duplex Modes: Operates in both Half and Full Duplex (10/100 Mbps).
Interface: USB 2.0 male to RJ-45 female, with backward compatibility for USB 1.1/1.0.
Energy Management: Includes suspend and resume detection logic for power saving.
Flow Control: Supports IEEE 802.3x full-duplex flow control.
Compact Design: Portable form factor for mobile use with laptops and tablets. Windows 11 Driver & Compatibility
While older packaging may only list support up to Windows 10, the QTS1081B is generally compatible with Windows 11. However, it often requires manual driver installation rather than being fully "plug-and-play" on newer systems. Installation Steps for Windows 11:
Device Manager: Locate the adapter under "Other devices" (it may appear with a yellow caution mark).
Update Driver: Right-click the device and select "Update driver".
Manual Search: Select "Browse my computer for drivers" and point it to the unzipped driver folder containing the .sys file.
Alternative Source: If you lack the original driver disk, generic "Corechip RD9700" drivers from the Microsoft Update Catalog are often effective for this hardware. If you'd like, I can: Help you find a direct download link for the driver Troubleshoot why the adapter is not being recognized
Recommend a faster USB 3.0 Gigabit adapter if you need speeds over 100 Mbps Let me know how you'd like to proceed. QTS1081B adapter driver - Microsoft Q&A
The QTS1081B USB to LAN adapter is a compact, cost-effective networking tool designed for laptops and desktops that lack a built-in Ethernet port. While it is often marketed as a "Plug and Play" device, many Windows 11 users find they need to manually install specific drivers (often identified as Corechip or RD9700 drivers) to make it work correctly. Key Hardware Features
Connectivity: Features a standard USB 2.0 Male connector and an RJ-45 Female port for Ethernet cables.
Network Speed: Supports 10/100 Mbps Fast Ethernet with auto-sensing capability.
Full Duplex Support: Compatible with IEEE 802.3x full-duplex flow control for stable data transfers.
Compatibility: While primarily designed for USB 2.0, it is backward compatible with USB 1.1 ports. Windows 11 Driver & Software Features
OS Support: Explicitly compatible with Windows 11, as well as older versions like Windows 10, 8.1, and 7.
Manual Installation Support: If the device isn't recognized immediately, Windows 11 allows for manual driver updates through the Device Manager.
Microsoft Update Catalog Integration: Compatible drivers can often be found by searching the Microsoft Update Catalog for "Corechip" drivers.
Resource Sharing: Once the driver is active, the system treats the adapter as a standard network interface, allowing for file and printer sharing over the local network. Common Performance Tips Note: If the adapter is a generic no-name
USB 3.0 Ports: While the adapter is USB 2.0, plugging it into a USB 3.0 port on your laptop can sometimes provide a more stable power supply, though it will not increase the 100 Mbps speed limit.
Driver Identification: In the Windows 11 Device Manager, this device may appear under "Other Devices" with a yellow caution mark until the QTS1081B/RD9700 driver is manually pointed to the system.
Are you currently having trouble getting your computer to recognize the adapter, or QTS1081B adapter driver - Microsoft Q&A
How to Install and Troubleshooting QTS1081B USB to LAN Driver on Windows 11
The QTS1081B USB to LAN adapter is a budget-friendly device designed to provide wired 10/100 Mbps Ethernet connectivity to laptops and tablets that lack a built-in RJ45 port. While often sold as a plug-and-play device, users on Windows 11 frequently encounter driver installation issues because the adapter uses an older Corechip (RD9700) chipset that Windows may not automatically recognize. Understanding the QTS1081B Adapter
This hardware is a USB 2.0 to RJ45 converter that supports standard 10/100M Fast Ethernet. Its reliance on the RD9700 driver often requires a manual installation approach on newer operating systems like Windows 11. Step-by-Step Installation for Windows 11
If your system does not automatically detect the adapter, follow these steps to manually install the driver: Download the Driver:
Since official manufacturer websites are often hard to find for this off-brand device, a reliable method is to search the Microsoft Update Catalog for "Corechip" drivers.
Alternatively, community sources often point to OEM Drivers for the specific QTS1081B package.
Extract the Files: Once downloaded, right-click the .zip file and select Extract All.
Open Device Manager: Right-click the Start button and select Device Manager.
Locate the Device: Look for "Other Devices" or "Network Adapters." The QTS1081B usually appears as an "Unknown Device" or "USB 2.0 10/100M Ethernet Adapter". Manual Update: Right-click the device and select Update driver. Choose Browse my computer for drivers.
Click Browse, select the folder where you extracted the driver files, and click Next.
If that fails, select "Let me pick from a list of available drivers on my computer" and manually choose a compatible "Corechip" or "RD9700" driver if it appears in the list. Troubleshooting Common Issues QTS1081B adapter driver - Microsoft Q&A
Getting the QTS1081B USB to LAN adapter working on Windows 11 can be tricky because the hardware is often generic and doesn't always include "Plug and Play" drivers for newer operating systems. Most of these adapters use chipsets from Corechip Semiconductor or are rebranded versions of the RD9700 chipset. How to Install the Driver on Windows 11
Since Windows 11 may not recognize the device automatically, follow these manual steps: Download from Microsoft Update Catalog:
Search the Microsoft Update Catalog for "Corechip Semiconductor".
Download the driver listed for your architecture (usually x64 for Windows 11). Extract the Files:
The download is often a .cab (cabinet) file. Double-click it and copy all the internal files into a new folder on your desktop, such as "Ethernet_Driver". Use Device Manager: Right-click the Start button and select Device Manager.
Look for an "Unknown Device" or one with a yellow caution icon, likely under "Other devices". Right-click it and choose Update driver.
Select "Browse my computer for drivers" and point it to the folder you created in step 2. Common Issues & Solutions QTS1081B adapter driver - Microsoft Q&A
Struggling with an "i---" brand USB to Ethernet adapter on Windows 11? You are not alone.
Many users purchase budget-friendly USB to LAN adapters labeled with brands like i-tek, i-technology, or generic "i---" models. These often feature the QTS1081B chipset. While Windows 11 usually handles drivers automatically, this specific chip sometimes requires a manual fix to avoid limited connectivity, blue screens, or the dreaded "Code 31" error.
This article provides the complete, step-by-step solution.
When you plug a QTS1081B adapter into a Windows 11 PC, the OS often labels the device simply as "i---" or "i--- Network Adapter" . This is a placeholder name stemming from the chipset manufacturer's ID string. In most cases, the "i---" refers to a chipset manufactured by Corechip (often the SR9900 or similar) or a Realtek clone.