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【Direct OEM Replacement】: 100% authentic i7 Toolhead Board designed for SPARKX i7 Combo. Drop-in fit with some mounting screws — restores factory-level functionality without firmware updates or complex calibration 【Complete Hotend Control Hub】: Engineered as the central control PCB for i7 Print Head Board, managing all critical toolhead functions. Coordinates heater output, thermistor readings, and extruder communication through a single integrated platform for reliable print performance 【Precision Temperature Management】: Dedicated TH+ and HEAT+ terminals with robust 35V-rated power regulation ensure accurate thermal control up to 300°C. Enables stable high-temperature printing for demanding materials like PETG and PLA-CF without thermal drift 【High-Speed Data Interface】: Built-in USB-C connector delivers fast, reliable communication between the toolhead and mainboard. Minimizes latency for real-time sensor feedback and motor control during 500mm/s high-speed printing operations 【Modular Connector Design】: Multiple standardized white JST-style ports allow quick, secure connections for heater cartridge, thermistor, cooling fan, and extruder motor. Tool-free plug-and-play wiring simplifies installation and reduces maintenance downtime