Brand new Y cable that connects Trimble 5600 / Geodimeter total stations to 12V power and also to the data collector allowing for programming of the instrument such as radio channel change, entering robotic mode and checking other settings. Trimble part number 20059B. 12v alligator cable, sold separately.
 
Works with following instruments:
Trimble 5600 series
Geodimeter
Spectra Precision Focus 10