Product Description.Hot bed high-power expansion board, compact and atmospheric appearance, unique snowflake heat sink appearance design, heat dissipation more powerful, solve the problem of excessive power due to the hot bed, current load, this module in the normal heat dissipation, measured I ( Max ) = 30A can be stable long-term work, the use of the process, the current should not exceed 30A Product weight: 65g Shipping list.High Power Module -1Main board PWM 20CM signal control cable - 1High power module 30cm power cable - 2 (red and black each one)Tip: When using a hot bed power greater than 150W, please external high power module.