nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy [MDBT50Q-RX] : ID 5199 : $15.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![](https://cdn-shop.adafruit.com/970x728/5199-00.jpg)
![](https://cdn-learn.adafruit.com/assets/assets/000/107/814/medium800/circuitpython_update_bootloader_arduino_2.png?1642132445)
Overview, Introducing the Adafruit nRF52840 Feather
This USB dongle/key type thing is a little unusual - it isn't a BLE adapter that you plug into a computer to add wireless capability. (If you do want
![](https://cdn-shop.adafruit.com/970x728/5199-00.jpg)
nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy
![](https://cdn-shop.adafruit.com/413x309/2633-04.jpg)
Adafruit Feather nRF52840 Express : ID 4062 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![](https://cdn-shop.adafruit.com/413x309/4481-05.jpg)
nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy [MDBT50Q-RX] : ID 5199 : $15.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Adafruit_nRF52_Bootloader/README.md at master · adafruit/Adafruit_nRF52_Bootloader · GitHub
![](https://m.media-amazon.com/images/I/61GpooSxfCL._AC_UF350,350_QL80_.jpg)
nRF52840 Micro Dev Kit USB Dongle : Electronics
![](https://cdn-shop.adafruit.com/640x480/2094-04.jpg)
Update Bootloader, Introducing the Adafruit nRF52840 Feather
![](https://cdn-shop.adafruit.com/230x173/5864-00.jpg)
nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy [MDBT50Q-RX] : ID 5199 : $15.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![](https://cdn-shop.adafruit.com/product-videos/320x240/5870-06.jpg)
nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy [MDBT50Q-RX] : ID 5199 : $15.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![](https://cdn-shop.adafruit.com/230x173/5700-06.jpg)
nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy [MDBT50Q-RX] : ID 5199 : $15.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![](https://cdn-learn.adafruit.com/guides/images/000/001/615/medium800/py.jpg)
UF2 Bootloader Details, Adafruit Feather M0 Express
![](https://assets.rs-online.com/c_scale,w_400,f_auto,q_auto/no_image.png)
Adafruit Industries - 5199 - nRF52840 USB Key with TinyUF2 Bootloader - Bluetooth Low Energy - MDBT50Q-RX - RS