... tested before delivery 4.high quality SMT USB receptacle/connector with 4 pinInsulation Resistance: 100MΩ Dielectric Withstanding Resistance: 100V ... Application:desktop PCs, peripherals, keyboards, mouse, digital consumer electronics and telephony-ISDN, PBXs, Cell phones, PDAs, MP3 Players, ... if you have any needs about switches,usb connector,sockets and so on.We always adhere to the business ...