Feature: Mosfets (PA0, PA1, PA2, PA3): 4 x 3A mosfets can control LED, heater, fan and other accessories.Thermistor (PA5, PA6): Two thermistor inputs (Klipper by default) using 4.7K pull-up resistors are connected to pins PA5 and PA6. connector (PB1): Use neopixels title. There is a power input pin (NPV) that can provide the voltage you need (5V / 12V) and pass it to the three-pin header (Vin, Data, Ground) connected to J1, which has an NPV Supply voltage, GND and PB1.Specification: Applicable model: for Voron 2.4Material: PC+metalcolour: BlackPackage Contents: 1 x Expansion BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.