The is a series of high-speed USB-to-Ethernet controller chips manufactured by WCH (Nanjing Qinheng Microelectronics) . Unlike the common CH340 (USB-to-Serial), the CH9100 family (including CH9101, CH9102, CH9103) functions as a USB Miniport Ethernet Adapter , enabling a computer to connect to a wired network via a USB port.
Sometimes you need a clean slate. Follow these steps to fully remove Driver 15:
Technical Support Documentation Attachment suggestion: Driver inf file summary, vendor signature certificate info, installation screenshots (available upon request).
Many users make the mistake of installing the generic CH340 driver or an older CH9100 driver (e.g., version 12 or 13). This leads to:
The (interpreted as v1.5.x) is a stable, production-ready release that resolves many legacy issues. It provides reliable USB-to-Ethernet conversion for embedded systems, thin clients, and laptops lacking an RJ45 port. Users should always download the driver from an official source to avoid malware-tainted “driver updater” tools.
