# nRF52840 MDK USB Dongle A basic USB stick that contains the nRF52840 chip from Nordic and has 12 GPIOs available. Additional detail: https://wiki.makerdiary.com/nrf52840-mdk-usb-dongle/ ## Hardware Features * Nordic nRF52840 System-on-Chip * ARM® Cortex®-M4F processor optimized for ultra-low power operation * Combining Bluetooth 5, Bluetooth Mesh, Thread, IEEE 802.15.4, ANT and 2.4GHz proprietary * On-chip NFC-A tag * On-chip USB 2.0 (Full speed) controller * ARM TrustZone® Cryptocell 310 security subsystem * 1 MB FLASH and 256 kB RAM * Up to 12 GPIOs available via headers * User programmable Button and RGB LED * On-board 2.4G chip antenna * 3.3V regulator with 1A peak current output * VBUS & VIN Power-Path Management * Convenient USB dongle form factor * Breadboard-friendly with dual 10-Pin headers * Measures 1.65" x 0.7" x 0.16" (42mm x 18mm x 4mm) without headers soldered in