It's design for Raspberry Pi Pico / Pico H / Pico W modules.
GPIO Status LED Indicator: If the GPIO output / input level is high, the LED is ON, and if the GPIO output / input level is low, the LED is OFF.The state LED is driven by the chip, not GPIO, so the GPIO is not affected.
GPIO 1 into 3: 40 Pins, each pin has 3 types output (Female Pin Header / Male Pin Header / Screw Terminal).