Add 8086 USB Interposer.

_board/8086_usb_interposer.md

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+---
+layout: download
+board_id: "8086_usb_interposer"
+title: "USB Interposer Download"
+name: "USB Interposer"
+manufacturer: "8086 Consultancy"
+board_url: "https://www.tindie.com/products/8086net/usb-interposer/"
+board_image: "8086_usb_interposer.jpg"
+date_added: 2024-07-03
+family: raspberrypi
+features:
+  - STEMMA QT/QWIIC
+
+---
+
+The USB Interposer is a compact RP2040 based board with USB Type-A plug and socket for Meddler-in-the-Middle manipulation.
+
+## Specifications
+
+  - Raspberry Pi RP2040 Dual Core Cortex-M0
+  - 16 MB of FLASH
+  - 264 KB of RAM
+  - USB Type-A Plug Device (Hardware)
+  - USB Type-A Socket Host (Software)
+  - User/BOOT Button
+  - UART/SWD/I2C Connectors
+  - 4 LED
+
+## Purchase
+* [8086 Consultancy](https://www.tindie.com/products/8086net/usb-interposer/)
+