User's Manual

6.6 USB
The nRF52840 Dongle features a USB-A-type connector printed on the circuit board.
Additional test points for the USB data lines are available on the bottom side of the circuit board
if thenRF52840 Dongle is used as a module on a motherboard with a USB connector. To
disconnect data linesfrom the onboard USB connector, cut solder bridges SB3 and SB4.
Figure 9: Disconnecting USB data lines
6.7 SWD interface
On the back side of the nRF52840 Dongle, there are connection points for the SWD interface.
The dongle is equipped with a footprint for two different connectors. On footprint P1, a
standard 2×5-pinpin header with a 1.27 mm pitch can be soldered. On footprint J2, it is possible
to connect a TC2050 cablefrom Tag-Connect.
For instance, a Nordic development kit can be used as a programmer for the Dongle.