1Upgraded chips have more stable performance and are faster to process 2Support desktop computer with have PC slot, not support Laptop 3widely used on various cnc routers, and cnc engraving and milling machine for cutting, engraving, molding processing, advertising products manufacturing, etc. 43 times the thickness of gold plating, 100,000 times of plug and pull, anti-interference data transmission is more secure 5Full solder joints, fine welding, 15-pin interface, anti-interference, good contact, stable data transmission
