The JetCat Mini-GSU is an optional miniaturized Ground Support Unit (GSU). The Mini-GSU is so small that it can easily remain in the model if desired. The 2-line, backlit, alphanumeric LCD display and the 10 function keys offer the same operations as the "large" GSU. The connection to V6 and lower ECUs is done via an 8-pin ribbon cable and connector directly to the LED-I/O interface.

The connection to V10 & up ECUs is made either directly to the ECU or to the standard LED-I/O interface via a 6-pin ribbon cable or via an 8-pin ribbon cable and connector to the JetCat I/O interface with charging input.