usb2 0 3 0 smart digital blackboard

{"cid":"91220330","title":"65 Inch 4K Smart Digital Blackboard with 4GB RAM 64GB Storage and USB2.0\/3.0 Interface for Interactive Teaching","imgUrl":"https:\/\/img.chinax.com\/nimg\/ae\/2e\/497d2bf5ee3cd4033c36e7c8617c-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"MTHGH","Model Number":"XYC-65","Minimum Order Quantity":"1 Set","Delivery Time":"7-10 work days","Brightness":"350cd\/m2","Touch type":"20~40 points touch","Touch sensor":"Infrared touch","Interface":"USB2.0\/3.0","Multi User Support":"Yes","Ram":"4GB","Contrast Ratio":"1200:1","Panel type":"TFT LCD","Place of Origin":"China","Screen Size":"65 Inch","Dual System":"Support","Response time":"2ms","Certification":"CE FCC","Payment Terms":"L\/C,T\/T,Western Union","Supply Ability":"10000 Set","Packaging Details":"Standard carton package : carton+ plastic bag+ foam+ honeycomb paperboard+ pack thread.","Resolution":"3840*2160@60Hz","Touch Technology":"Nano Film","Touch surface":"4mm tempered glass","Storage":"64GB","Chalk Writing":"Support","Smart Blackboard Size":"65 Inch 4K Flat Writing Panel","Diagonal Aspect Ratio":"16:9"}}