This V4.1B bord can only be a replacement for V4.1B board,  can not replace other board like V4.0 , V3.0 V3.1 etc  . 

pls check which board does your printer has before order . the board type will be written on the board itself .

need order a same board as your printer originally has. otherwise will not be compatible .

A4988 stepper drivers are soldered on this board.

Here are its main features:

1. Using ATMEGA2560 as its core chip, with its flash memory at 256KB and operating frequency at 16MHz.

2. Compatible with 12V/24V input voltage. Featuring dual power supply, one for powering up the heatbed (15A), the other for other electronic parts (10A).

3. The interface for the heatbed comes with a high-power MOS tube, which is of ultra-low conductive internal resistance. High performance and stable.

4. With 2 interfaces for normally open fans and 1 interface for LED light.

5. Driven by 4pcs A4988 stepper motors for a single extruder.

6. With extension interfaces for LCD display and SD card. Support 2004 or 12864 LCD display.

7. Support 3D touch auto-leveling function and filament detector.

8. Using Marlin firmware, stable and easy to operate.

9. Highly integrated and easy to assemble.

Specifications:

 Net weight: 72g

Gross weight: 113g