Driver version 21 addresses a known vulnerability (CVE-2022-43771) present in versions prior to v20, where a malicious USB device could spoof a JP1081B and cause a buffer overflow. The patch in v21 implements proper input validation on USB control transfers. Always ensure you have the official signed driver; unsigned or modified versions may lack this security fix.
As of 2026, Realtek has not released an official version 22 for the RTL8153 chipset, as the chip is considered mature. However, some JP1081B clones use a newer RTL8156 (2.5 Gbps) chip, which requires separate drivers. Version 21 remains the latest stable release for 1 Gbps variants. For those seeking 2.5 Gbps performance, look for JP1081B v2 hardware – but that is a different product line.
Disclaimer: Driver downloads should be performed from reputable sources to avoid malware. The links provided are based on common, publicly identified drivers for this hardware. jp1081b usb lan driver 21
Corechip Semiconductor RD9700 (often identified by Hardware ID USB\VID_0FE6&PID_9700 Operating Systems: Supports Windows 7, 8, 8.1, 10, and 11 (32-bit and 64-bit).
folder. Extract them to a known location (e.g., your Desktop). Manual Update via Device Manager: Device Manager , right-click the unidentified adapter. Update driver Browse my computer for drivers Let me pick from a list of available drivers on my computer As of 2026, Realtek has not released an
Version “21” often includes:
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 For those seeking 2
The JP1081B is supported natively by the or ASIX family drivers in kernels 4.x and above. You rarely need a separate driver. To check: lsusb – if the chip is recognized, the cdc_ether module will load automatically.
The JP1081B USB LAN adapter is a useful tool for adding wired network connectivity. While it's often plug-and-play, knowing how to find the correct driver—by identifying the chipset via its Hardware ID—is key to getting it working. This guide provides all the steps and resources needed for a successful setup. If you encounter any issues, the troubleshooting section should help resolve the most common problems.
Because these compact dongles rely on a specific legacy network chipset—most commonly identified by the Hardware ID USB\VID_0FE6&PID_9700 —having the precise driver version installed is the only way to avoid the dreaded "Device Not Recognized" error in Windows. Understanding the JP1081B Hardware Profile
Before executing a manual driver installation, it is helpful to understand what is under the hood of this budget network peripheral.