This 1'-long, black 3.5mm TRS M/M Cable for 12 Volt Trigger or Analog Audio from Benchmark fits the Trigger I/O ports on Benchmark products. It also fits the 12 V Trigger in and out ports on many other products. 12 V trigger signals can be used to link two products together so that one can control the on/off functions on the other. Benchmark Trigger I/O ports can be connected to the Trigger In or Trigger Out ports on most other products too.