This V4.0 bord can only be a replacement for V4.0 board . 

if your printer current board is V3.0 or V3.1 , pls send an email to sales@geeetech.com, 

we will arrange offline order for you to change into V4.0 board and other needed parts . 

From V3.0 / V3.1 board to V4.0 board , also need change new screen , lcd cable , extension board and all the cables connect to control board . 

so they can be compatible. 

GT2560 V4.0 control board, developed by Geeetech, is currently used for A10, A10M, A20 and A20M 3D printers. 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 6 A4988 stepper motors for a single extruder or multiples ones.

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