AMS 2 Pro is a 4-slot automatic material feeding system compatible with Bambu Lab X1, P1, P2, A1, H2D, H2S, H2C series 3D printers. Built with high-speed servo motor, it boosts feeding speed by 60% and cuts around 10 minutes of material switching time on average, greatly streamlining multi-color printing workflows. Equipped with 65°C active heating drying & sealed dehumidification storage, it effectively protects moisture-sensitive filaments like PETG and PA, with real-time temperature & humidity monitoring accessible via printer screen, Bambu Studio and Bambu Handy. Built-in RFID auto-scans filament information to track material usage and simplify stock management. Wear-resistant ceramic inlet bushings deliver stable long-term feeding performance. Up to 4 units can be cascaded to support up to 24-color printing for complex multi-material models. Constructed with sturdy ABS/PC housing, this unit supports 1.75mm diameter filaments and fits standard spools from 50–68mm width, 197–202mm diameter. The full package includes AMS 2 Pro main unit, desiccant packs, PTFE feeding tubes and a 6-pin connecting cable. Note: Different printer models require matching adapters for full function; A1/A1mini/X1/P1 series need extra power adapters to activate drying function. High-temperature carbon fiber filled filaments cannot be fully dried with this unit.