Control Board Utilizes 32-bit ARM -M7 series STM32H723ZGT6 MCU with a main frequency of 550MHz; High-performance MOSFETs to reduce heat generation. Onboard 8 TMC2160 drivers in SPI mode with DIAG function pins; simply plug and unplug for easy use; Onboard two MAX31865 modules, supporting dual PT thermocouples and compatible with two or four-wire PT100/PT1000, facilitating DIY usage for customers. Reserve 2 CANbus ports (JST socket, which can directly connect to EBB SB2209/SB2240 CAN wiring); Reserve two four wire fan interfaces, with optional 24V/12V/5V voltage, and can be used to connect to water cooling devices; Reserve proximity switch interface, supporting NPN and PNP type selection (24V/12V/5V) voltage ; Reserve SPI extension interface for users using Klipper firmware to connect external acceleration sensors for acceleration compensation. Colour:Black Material:PCB Package Contents: 1 x Printer Control Board Only 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.