| Attribute | Details | |--------------------|-------------------------------------------| | | CH9100 series (CH9101, CH9102, CH9103) | | Device Type | USB Miniport Ethernet Adapter | | Vendor ID | 1A86 (WCH) | | Product ID (Typical) | 0x55E3 (Ethernet mode) | | Interface | USB 2.0 (High Speed) / USB 1.1 Compatible| | Supported OS | Windows, Linux, macOS, Android |
It is worth comparing Driver 15 to other USB-to-serial solutions: Ch 9100 Usb Miniport Ethernet Adapter Driver 15
| Issue | Driver v15 status | Workaround | |-------|-------------------|-------------| | | Partially resolved | Reinstall driver with admin rights; disable driver signature enforcement on older Windows. | | Intermittent disconnection | Improved in v15 | Use a powered USB hub; disable USB selective suspend. | | No link light after Windows sleep | Known limitation | Unplug/replug adapter, or restart WcndisSvc service. | | MAC address changes on reboot | By design | v15 driver allows setting static MAC via registry (advanced property). | | | MAC address changes on reboot |
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To test functionality: