After-sale Services: If you have any problems about this SKR V1.4 Turbo motherboard, please feel free to tell us, we have professional after sales engineer will give you satisfied after-sales service. High Performance Chipset: BIGTREETECH SKR V1.4 Turbo control board is adopts 32-bit ARM Cortex-M3 processor LPC1769 main control chip with 120 MHz ARM level. Equipped with highly modular and open source firmware Marlin, which is convenient for users to DIY and secondary development. Compatible with btt Pi V1.2/PI 2 or CB1/CB2+Pi4b, support running Klipper firmware. Multi-Function Interface: BTT SKR V1.4 turbo support resume printing while power off, filament break detection, automatic shutdown after printing, bltouch, microprobe v2.0, eddy auto bed leveling sensor and so on, I2C, spi and WiFi interfaces are reserved for convenience of DIY, closed-loop drive interface is reserved to reduce the trouble of plug-in switching module. Dual Working Modes: The SKR V1.4 Turbo mainboard has a