Click and select the folder where you extracted the portable RAR files. Check the box for Include subfolders and click Next .
To help you get this adapter working perfectly, could you share a bit more context? Let me know:
After driver loads:
Before downloading anything, confirm the exact chipset inside your JP108 adapter to ensure 100% driver compatibility: Plug the USB LAN adapter into your computer. Press and select Device Manager .
The search query includes two critical modifiers: and Portable . jp108 no 030818 usb lan driver freerarl portable
It leaves no registry bloat or unneeded background software on your operating system. How to Safe-Source and Extract the Driver
Laptops without LAN ports, fixing broken onboard network cards, connecting, and creating network bridges.
The core of this technical inquiry lies in the JP108 USB LAN adapter, often identified by specific batch numbers such as "No 030818." These devices are typically inexpensive, generic USB-to-Ethernet converters, commonly utilized to add a wired network port to laptops that lack a built-in RJ45 port. While functional and cost-effective, these adapters are often produced by manufacturers who provide minimal long-term support. As operating systems evolve—moving from Windows XP to Windows 10 and 11—the original installation media provided with the hardware becomes incompatible. Consequently, the hardware itself remains functional, but the software bridge required to communicate with the computer is lost, transforming a useful tool into a plastic brick without the intervention of a specific driver file.
This is the gold standard for portable driver management. Download the SDI_R[version].rar file, extract it with FreeRAR, and run the portable executable. It will automatically detect the JP108 No. 030818 hardware. Click and select the folder where you extracted
| Issue | Potential Solutions | | :------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | | Try a different USB port on your computer. A USB 2.0 port is recommended for these devices for optimal performance. If possible, test the adapter on another computer to determine if the issue is with the device itself or your specific PC. | | "Code 10" or "Code 43" error in Device Manager | These errors often indicate a driver conflict. Try uninstalling the current driver from Device Manager (right-click the device -> Uninstall device). Make sure the box for "Delete the driver software for this device" is checked if available. Then, unplug the adapter, restart your PC, and reinstall the driver, ensuring you have the correct version for your specific operating system architecture (32-bit vs. 64-bit). | | Slower than expected network speeds | First, verify the adapter is connected to a USB 2.0 port, as USB 1.1 ports are much slower. Also, check your Ethernet cable and ensure your network hardware (router/switch) supports higher speeds. One user even noted that real-world speeds for some JP108 adapters can be as low as 5Mb/s, highlighting the importance of setting realistic performance expectations for these budget-friendly dongles. | | No driver works (Linux/Raspberry Pi) | The DM9601 chipset has known compatibility issues with some Linux kernels, causing system freezes or "kernel bugs". If you encounter this, your best course of action is to search the specific Linux distribution's forums or bug trackers for a patched driver or a workaround. Some users have had success by modifying the driver source code, but this is an advanced solution. |
Note the exact folder location where the files were extracted. Step 2: Open Device Manager Right-click the Windows button. Select Device Manager from the pop-up list.
When searching for this driver online, terms like "freerar" and "portable" frequently appear.
Your search included the phrase "freerarl portable". This likely points to the method of distribution for these hard-to-find drivers on various forums and file-sharing sites. Because official support is non-existent, users often share their "found" drivers in compressed formats: Let me know: After driver loads: Before downloading
Because these drivers are often "portable" (inf-based), they may not have a standard installer. Follow these steps: Extract the File: Use a tool like WinRAR or 7-Zip to extract the file you downloaded. Open Device Manager: Right-click the Start button and select Device Manager Locate the Device:
Windows XP, Vista, 7, 8, 8.1, and 10 (both 32-bit and 64-bit). Common Chipset: Corechip Semiconductor / Davicom DM9601. Speeds: Fast Ethernet (10/100 Mbps). How to Install the Driver Manually
Are you currently seeing an (like Code 10 or Code 43) in your Device Manager?
Modern versions of Windows may attempt to install a driver automatically if you have an active internet connection via another source. 64-Bit Support: