The USB 4G Wi-Fi Router Solution supports standard USB CDC (Communications Device Class) drivers. It connects to 4G Cat.1 and Cat.4 modules through the native USB interface, enabling "medium to high-speed" dial-up internet access. Simultaneously, it can activate Wi-Fi Soft-AP mode, allowing the sharing of hotspots with IoT devices or human-machine-interaction devices to achieve cost-effective, medium- to high-speed networking. This solution is suitable for building applications such as 4G IoT gateways, MiFi (mobiles) hotspots, smartwatches, outdoor cameras, advertising lightboxes, and more.

The USB external storage Solution enables Espressif SoCs to achieve functions such as USB flash drive mounting, file system access, and OTA upgrades. This solution is compatible with USB 3.1/3.0/2.0 protocols and supports Fat32-formatted USB drives, suitable for building applications like electronic photo albums, attendance machines, recording instruments, and other scenarioses that require external storage.

The USB Human Interface Solution supports Host HID (Human Interface Device) drivers, allowing users to transmit real-time control signals of human-computer interaction devices through the USB interface. This expands communication and interaction between users and computer systems, as well as other digital devices. The solution is suitable for building applications such as HID wireless adapters, minicomputer systems, mini video game players, and other human-computer interaction scenarioses.