ST P-NUCLEO-WB55 - Arduino uno Revision 3 Connectors; Figure 22. Arduino Connector

UM2435 Rev 2 37/48
UM2435 Connectors
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8.2 Arduino™ Uno revision 3 connectors
The Arduino™ connectors CN5, CN6 CN8 and CN9 are female connectors compatible with
Arduino™ standard. Most shields designed for Arduino™ fit to the Nucleo board.
The Arduino™ connectors on the Nucleo board support the Arduino™ Uno revision 3.
Figure 22. Arduino™ connector