An RP2040 board with hardware USB Device (plug) and software USB Host (socket)! The USB Interposer from 8086 is a compact RP2040-based board with two USB ports, the USB 2 Type-A plug is connected to the hardware USB device and the USB socket is connected to GPIO pins allowing it to be used with Pico-PIO-USB (a USB host/device implementation using PIO of Raspberry Pi Pico). The board also has 2 LEDs on each side (red/amber), 3-pin SH sockets for UART and SWD debug, and a 4-pin SH socket (STEMMA QT/Qwiic) for I2C. The BOOT button is also available as a user button. The USB Host port can be used with CircuitPython (USB HOST) or Arduino software. GPIO Name Description GP0 UART TX Serial Port GP1 UART RX Serial Port GP7 LED Top Red GP8 LED Top Amber GP12 Button User/BOOT GP14 SDA I2C St/Qw Port GP15 SCL I2C St/Qw Port GP16 D+ USB Socket GP17 D- USB Socket GP18 USB PWR Enable USB Socket GP22 LED Bottom Red GP23 LED Bottom Amber GP26 ADC /2 voltage on VBUS Input GP27 ADC /2 voltage on VBUS Output Package Contents * 1x USB Interposer board https://elecena.pl/product/26823157/usb-interposer 2024-08-23 https://elecena.pl/product/26823157/usb-interposer 2024-09-18 https://elecena.pl/product/26823157/usb-interposer 2024-11-29 https://elecena.pl/product/26823157/usb-interposer 2024-11-30 https://elecena.pl/product/26823157/usb-interposer 2025-11-28 https://elecena.pl/product/26823157/usb-interposer 2025-11-29