Features: RE-ARM is a 100Mhz, 32-bit ARM controller for Arduino MEGA. It is a plug-in replacement for Arduino Mega in the RAMPS setup, which can be quickly and easily upgraded to a 32-bit good state. It runs Smoothieware and for Marlin 2.0 firmware. More powerful processor. Faster feed rate! Easily configure with text files on the SD card without having to upload firmware each time you make a change. The SD card is displayed as a drive in for Windows. Easily drag and drop new firmware or edit configuration files. Ability to run smaller microstepping stepper drives. Like the 1/128 microstepping SD6128 driver. Available Ethernet RJ45 add-on modules. Run the graphic LCD with for Deltas without getting stuck. Run 2 SD cards, one for setup and firmware (onboard) and one for file loading (on LCD). 5V withstand voltage pin, except 3.3V analog input. Can run CNC, laser cutting machine and 3D printer. Specification: Material: ABS Colour: Black Size: approx. 11 * 6.2 * 1cm / 4.3 * 2.4 * 0.4in Package list: 1 * 32Bit Control Board 1 * USB Cable 1、RE-ARM is a 100Mhz, 32-bit ARM controller for Arduino MEGA. 2、It is a plug-in replacement for Arduino Mega in the RAMPS setup, which can be quickly and easily upgraded to a 32-bit good state. 3、More powerful processor. Faster feed rate! 4、Easily configure with text files on the SD card without having to upload firmware each time you make a change. 5、Ability to run smaller microstepping stepper drives. Like the 1/128 microstepping SD6128 driver.