1、Ramps 6 is optimized and extended based on Ramps 4 and Ramps 2、The result is almost identical to Ramps 5, except that the Ramps 6 has a new 2pin connector for easier and more convenient connections. 3、More importantly, the Ramps 6 has a good heat sink above the MOS tube for better heat dissipation and will not burn easily. 4、In addition, the Ramps 6 has a higher power than the Ramps 5, with a maximum power of 270W, while the Ramps 5 can only reach 200W or less. 5、Supports motor drives such as the A4988 and DRV8825 (supports up to five motor drives simultaneously). Features: Ramps 1.6 is optimized and extended based on Ramps 1.4 and Ramps 1. 5. The result is almost identical to Ramps 1.5, except that the Ramps 1.6 has a new 2pin connector for easier and more convenient connections. More importantly, the Ramps 1.6 has a good heat sink above the MOS tube for better heat dissipation and will not burn easily. In addition, the Ramps 1.6 has a higher power than the Ramps 1.5, with a maximum power of 270W, while the Ramps 1.5 can only reach 200W or less. Supports motor drives such as the A4988 and DRV8825 (supports up to five motor drives simultaneously).  Specification: Size: 101.5 x 60.5mm / 4 x 2.38in Package List: 1 x Pamps 1.6 3D Printer Control Board 1 x Heat Dissipation Plate 33 x Connection Port