It is an additional wire for G650, B2050, C1100, C1200, C1400, C3320, C3300, C3310, G1600, G3100, C3100, G7000, G7020, G7030, G7050, G4010, G4011, G4020, G4050, L1100, L1150 phones to connect with Twister Flasher, Tornado Box (UFS2, UFS3) and all other boxes with compatible RJ45 socket.