about 5 000 in the second connector 20 which gives it a greater longevity fig3 is a schematic drawing showing a stackable cable assembly in accordance with a preferred embodiment of the present invention where the 6 pins are broken up into two parts the first two pins are used for supplying power external power bus 30 and the last four pins are divided up into communications comms 32 labeled as a universal asynchronous receiver transmitter uart the comms 32 allows us to communicate to other different parts and pieces in the field including communications remote connector or anything else that has a communications device that can communicate through those four pins inside the unit on the other side of those four pins is a usb communication line the first module 34 snaps in the middle of the drawing slides in and snaps into place to the ltlm 12 it has the counterpart to the usb and allows us to do high speed data to memory devices such as a memory stick which can store pictures that the user can take off the unit and bring with him you can also read from that memory to configure the unit so that if the user is in an air force marine or army unit we can now reconfigure the device toward that particular branch of the service using a lookup table of configuration items and so that we can accommodate each branch of the service with respect to the way that the branch wants to operate the device the device also provides us with the ability to decide which device it would normally communicate for example the user could select which communication devices and what protocols would be used also it goes one.