This is a Holybro Pixhawk 6X Autopilot Flight Controller Standard Set .
DF13 5 Pin Flight Controller communication cable uses the Hirose DF13 series connector. It is 20 cm long and it is designed to be used on the APM and PX4 board series. It is typically used between the PixHawk and the GPS receiver module.
These cables have a good temperature resistive silicon flexible material with quality socket and pins.