The RD9700 is a core chip manufactured by Corechip Semiconductor. It's designed for USB 2.0 to Ethernet adapter devices that allow a computer to connect to a wired network through a USB port. This chip is widely used by many manufacturers and sold under various brand names, including Corechip, QTS1081B, KY-LAN, JP1081B, and others.
To fix this, you must manually force Windows 11 to accept compatible legacy drivers. Step-by-Step Driver Download and Installation Guide
Windows 11 includes a built-in driver catalog, but the WHQL (Windows Hardware Quality Labs) certification for the older RD9700 chipset is not always included. Microsoft removed some legacy drivers in newer builds of Windows 11 to tighten security, leaving the adapter showing a yellow exclamation mark in Device Manager.
Windows detects the device but labels it with a yellow exclamation mark in Device Manager, stating "Device cannot start (Code 10)" or "Drivers for this device are not installed."
In today's digital age, having a stable and fast internet connection is crucial for both personal and professional use. While most modern devices come equipped with built-in Ethernet ports or Wi-Fi capabilities, there are instances where you may need to connect to a network using an older technology, such as a USB 2.0 to Fast Ethernet adapter. One popular option is the RD9700 USB2.0 to Fast Ethernet Adapter. However, users may encounter issues when trying to install the necessary drivers on the latest Windows 11 operating system. This article aims to provide a comprehensive guide on downloading and installing the RD9700 USB2.0 to Fast Ethernet adapter drivers on Windows 11.
. While official Windows 11-specific support is limited, you can generally get it working by using compatible Windows 10 drivers or Realtek's universal installation programs. Recommended Download Sources
: You must explicitly direct Windows 11 to use older, working drivers through the manual installation wizard. Step-by-Step Installation Guide for Windows 11 Step 1: Download Safe Driver Files
How to Download and Install RD9700 USB 2.0 to Fast Ethernet Adapter Drivers on Windows 11
RD9700 USB 2.0 to Fast Ethernet Adapter is a budget-tier networking device primarily based on a Corechip or Realtek chipset. While it is widely available, modern testing reveals significant performance discrepancies compared to its advertised specifications. Performance Review False Speed Advertising : Although marketed as a USB 2.0 Fast Ethernet (100Mbps) device, hardware analysis often reveals it functions at USB 1.1 speeds Throughput Limits : In real-world tests, the adapter typically reaches only 5–7 Mbps
If your adapter came with a mini-CD, copy the folder named Win10_64 or Win8_64 to your desktop. If your laptop lacks a disc drive, you can download verified driver packages from reputable driver archiving sites (ensure you scan any downloaded .zip or .rar files with Windows Defender before opening them). Step 3: Manual Installation via Device Manager
: Once the installation is complete, it is recommended to restart your computer. This ensures that the new driver is properly loaded and ready to use.
