pico-usb-wifi is an open-source firmware project that converts the Raspberry Pi Pico W into a driverless USB WiFi adapter that works with Windows, Linux, macOS, and other operating systems with USB CDC-NCM support. The Infineon CYW43439 chip found in the SBC can’t be used directly as a USB to WiFi bridge, and instead, the firmware implements a transparent Layer-2 bridge between the Pico W’s wireless module and USB interfaces. It basically works as an Ethernet to WiFi gateway/bridge, which exposes an Ethernet connection through USB (aka USB gadget mode) used to route Wi-Fi packets from the network. pico-usb-wifi highlights: Transparent Layer-2 Bridging between the Pico W’s wireless and USB interfaces Exposed as a USB CDC-NCM device IPv4 and IPv6 with no NAT, no private subnet, and no port-forwarding to configure Out-of-band management and debug consoles over CDC-ACM serial WPA2-PSK and WPA3-SAE authentication (and open networks) Throughput – Average 4.75 Mbits/sec; […]
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Read more here: https://www.cnx-software.com/2026/07/16/pico-usb-wifi-converts-the-raspberry-pi-pico-w-into-a-driverless-usb-wifi-adapter/
