Link CAN to USB Tuning Cable. Used to connect the ECU to a computer via USB. A CAN to Serial cable is also available. 

Compatible with:
 
Link G4X Storm 
Link G4X and G4+ Fury 
Link G4X and G4+ Xtreme
Link G4+ Thunder 
All Link G4+ and G4X Plugin ECUs
Link G4+ Storm Black/Blue/Silver 
Any older Link ECU utilising the Link 6 Pin CAN connector
Vipec V88 and i44
Link G3