If Windows doesn’t auto-install:
Apple does not include a native driver for this chip. Third-party options exist but are increasingly unreliable on modern macOS versions (Ventura, Sonoma, Sequoia). usb vid-0fe6 amp-pid-9900
Understanding the hardware limits helps manage expectations regarding internet speeds and performance. Specification USB 2.0 (Backward compatible with USB 1.1) Max Network Speed Fast Ethernet (10/100 Mbps) Chip Package Duplex Support Full Duplex (10BASE-T, 100BASE-TX) and Half Duplex Standard Compliance IEEE 802.3, IEEE 802.3u If Windows doesn’t auto-install: Apple does not include
The official driver for this device is provided by Corechip Semiconductor. Look for a driver that supports the chipset. The driver .inf file you are looking for is named rd9700.inf . Many reputable third-party driver websites offer this driver as well. Specification USB 2
Because the SR9900 is an ultra-low-cost chip, Corechip does not maintain a highly visible, consumer-facing website for direct downloads. Most users get stuck when Windows fails to pull the driver automatically via Windows Update.