If the driver still doesn't install, ensure you have the correct file for your operating system's architecture (32-bit vs. 64-bit).
Cable or power negotiation issue, not driver 21 itself.
Ideal for laptops lacking a built-in Ethernet port, troubleshooting network issues, or connecting tablets to wired networks. 2. Why Do You Need the Driver?
The (often identified as the RD9700 or QTS1081B) is a budget-friendly USB 2.0 to Fast Ethernet converter. It typically uses a Corechip or JIAPENG chipset with the hardware ID USB\VID_0FE6&PID_9700 . Driver Compatibility and Downloads jp1081b usb lan driver 21
JIAPENG / Corechip JP1081 (often cross-compatible with RD9700) Interface: USB 2.0 (Up to 480 Mbps bus speed) Network Speed: 10/100 Mbps Fast Ethernet
The easiest way is to let Windows handle it. Just plug the JP1081B into a free USB port and connect an Ethernet cable from your router to the adapter. Windows will automatically search for and install the correct driver. This should take only a minute or two.
Trusted portals like the DriverIdentifier JP1081 Catalog and DriverMax host the exact .inf and .sys installation files. If the driver still doesn't install, ensure you
This article provides a definitive, step-by-step walkthrough for downloading, installing, and troubleshooting the on Windows 7, 8, 10, and 11.
| Source | Method | Pros | Cons | | :--- | :--- | :--- | :--- | | | Search for "Corechip" drivers | Highest safety and reliability | Requires manual installation; interface can be less user-friendly. | | OEM Driver Sites | Search for "RD9700" or "Corechips RD9700" drivers | Convenient; often provide ready-to-run .exe installers | Moderate safety risk ; verify file hashes if possible. | | Chipset Manufacturer (Realtek) | Search for "Realtek USB GBE Ethernet Controller driver" | Highly reliable for the underlying chip | Requires more technical knowledge; not specific to JP1081B. | | Third-Party Driver Sites | Use at your own risk; always scan for viruses | Quick and easy to find | Highest safety risk ; avoid if possible. | | Driver Update Software | Use tools like Driver Easy, Driver Booster, etc. | Automated; can find the exact driver | High safety risk ; often bloatware, sometimes malicious. |
| Issue | Older Driver (< v15) | Driver 21 | |-------|----------------------|------------| | Wake-on-LAN (WOL) | Unreliable | Fully functional | | Packet loss under load | Up to 5% | <0.1% | | USB selective suspend | Causes OD | Disabled by default | | IPv6 checksum offload | Broken | Fixed | | Driver signature (Win 11 22H2+) | Fails | Passes | Ideal for laptops lacking a built-in Ethernet port,
The JP1081B (often engineered with a chipset) acts as an external Network Interface Card (NIC). When plugged into a computer, the operating system uses the Hardware ID to communicate with the device. Core Technical Specifications
For MacOS, specific community-developed drivers like USBCDCEthernet on GitHub are often used to fix issues with random MAC addresses or missing native support.
: If the device appears as a "USB Storage" device instead of a network adapter, it may be in "Virtual CD" mode used for internal driver storage; it might require a "mode switch" or specific manual driver assignment to function correctly.
maximum. If speed is slow, ensure you are using a USB 2.0 port rather than a USB 3.0 port, as some older adapters have compatibility issues with USB 3.0 controllers.
You can see the hardware ID () of your adapter in the image below: