... 4pin usb ffc cable 2. provide connector 3.ROHS, ISO,UL 4.OEM/ODM ... Lengthmm20-50000Conductor Material 1.Tin coated flat copper wire 2.Nickel plated copper, gold plated touching faceInsulator Material ... cable is easy to meet the needs of different electronics.2.FFC is ideal for printers, scanners, duplicating machines, ... angle.4.FFC is suitable for various connectors. 2.54mm pitch, 4pin flat USB cable