... 3.USB port 4.CE,FDA certificate balsa wood cutting machineJD1612 model is special designed with 2 doors open ... is very easy for customer to put & pick up cutting material.Main application:Available materials: acrylic, PVC, rubber sheet ... wood, bamboo, oxhorn, figuline,marble, leather, cloth, double-color board, etc. nonmetal materialsComprehensive application: advertisement, arts and crafts, toys, ...