The nRF52840 Dongle is a compact, low-cost USB dongle for Bluetooth® low-power, Bluetooth, thread, ZigBee, 802.15.4, ANT and 2.4GHz proprietary applications using the nRF52840 SoC Dongle is the perfect target hardware for use with nRF Connect for Desktop because it is inexpensive, but still supports all short-range wireless standards used by Nordic devices The dongle is designed to work with nRF Connect for Desktop as a wireless hardware device For other use cases, please note that there is no debugging support on Dongle, only programming the device and communicating via USB nRF Connect for Desktop supports nRF52840 Dongle and programming via nRFUtil.Low cost USB dongle, support for Bluetooth LE, thread, Zigbee, 802.15.4, ANT and 2.4GHz,15 GPIOs and interfaces for castellated solder joints (The product printed words may vary depending on the batch, but this does not affect use) Color: As Shown Material: PCB Package Contents: 2 x nRF52840-Dongle