Nokia 5140 5140b 5140i UFS JAF RJ45 cable is an additional cable for above phones to connect with Twister Flasher, Tornado Box (UFS2, UFS3), N-Box, HWK, HWKuFs, MT-Box (without support for TX2 line), JAF, Cyclone Box (Cyclone adapter needed) and all other boxes with compatible RJ45 socket.