Function: 1. We adopted the proven hardware design of RUMBA and updated it with the new STM32F446 processor. 2. The products have a clock frequency of 180 MHz, 512 KB flash memory and 128 KB SRAM memory, all built on a high-performance ARM architecture. 3. RUMBA32 is a 32-bit control board, it will not force you do change the entire printer to do adapt it. 4. Like RUMBA and RAMPS, the product supports universal character and graphical display LCD. 5. The product is easy to install and convenient do carry due to its perfect size. Specification: Item Type: RUMBA Main Control Board Input Voltage (recommended): 12-24 V Input voltage (limit): 6-35 V Stepper driver: 6 (SPI StepStick socket support) MOSFET output: 6 Maximum bed current: 20A Maximum heater current: 5A Number of thermistor connections: 5 Limit switch: 6 Firmware: Marlin bufix-2.0 List of packages: 1 x Rumba Main Control Board 1 x USB do data cable Display LCD 1x12864 1 x Connection Board 2 x Grey Cable 1 x Seal 1 x Nut