The best answer is 'miniUSB' because older GPS units commonly utilized this connector type before the advent of newer USB standards. miniUSB was widely used in devices that required a smaller connector than the standard type-A USB but has been largely phased out by microUSB and USB-C. Choosing USB-C or microUSB would be inappropriate without an adapter, because they are a different physical shape and size, and not standard in older GPS units. RJ45 and Lightning connectors serve entirely different purposes and are not compatible with a USB interface that an older GPS unit would require. Therefore, miniUSB is most likely to be the correct option for connecting an older GPS unit.