... 3.with usb receiver 4.good quality wireless keyboard and mouse combos Model No. carton size pcs/ctnKG ... -001A450*325*425mm 30pcsKey No:109Work type:wireless keyboard and mouse combosInterface Type: USBMaterial100% ABS materialKeyboard Features:save ... ,waterproof,dust prevention and portable.Functional characteristics:wireless keyboard and mouse,with usb receiver,ergonomics design,simple fashion ...