This synchronization cable has an output of 3.5 mm. The cable has a length of 5 m. You connect one side, with PC connection, to the camera, the other side to the flash. Do you want to control multiple strobes? Then set your other strobes to "slave". They will now go off when the first flash goes off. If your camera does not have a PC connection, you need an adapter. Take a look at the bundles below.