These are 500mm long 4-conductor cables with 1mm JST terminations. They’re designed for the Qwiic connect system and are compatible with Sparkfun’s Qwiic modules and components.
All Qwiic cables follow this color scheme and pin arrangement:
Black = GND
Red = 3.3V
Blue = SDA
Yellow = SCL
Intrigued you say?
The Qwiic system is an ecosystem of I2C sensors, cables, actuators, and shields that quicken prototyping and decreases the errors that arise from incorrect connections. All devices in the Qwiic ecosystem are equipped with a common 1mm pitch, 4-pin JST connector.