... socket 4p,dip,90 degree,2.0 connector Usb 2.0 connector,usb socket 1.USB Connector, 2.USB is used in MP3 ... min.Durability: 1500cycles min.3.PHYSICAL:Insulator: pbt+30%glass fiber-filled ul94v-0Contact:phosphor bronzeMetal front shell: copper alloyMetal back ... contact us,if you have any needs about switches,usb connector,sockets and so on.We always adhere to the business ...