Racepak Racepak's latest memory cartridge replaces the traditional memory cartridge and USB cartridge reader. Data is downloaded from the logger's 25-pin serial port and transferred to the users' PC via a commonly available SD memory card. For use with Racepak data loggers utilizing memory cartridge download including the following: V300 / V500 / Pro 1 / Pro 1A / Pro 1B / Pro II / SC1000