You CAN'T! The only way to get one is to buy the complete sim all over again. They are VERY specific on their website to keep track of the usb slimstick. If it is defective or gets broken, they will replace it (if you send the old one back in), but they will not send them "stand alone". That is their security. It is so someone cannot use someone elses software and then just buy another slimstick. If you don't have the slimstick that connects the cable to the usb, you are tough out of luck . . .

http://www.reflex-sim.de/reflex-sim/...faqPath=20_149