USB DRIVE. hi there my mac won't recognize that my samsung HM120IC usb drive is connected, it

Question

hi there my mac won't recognize that my samsung HM120IC usb drive is connected, it works fine in a friend's laptop but not mine. i have checked the usb ports with other devices and they work fine.the system that i'm running is 10.4.10so technically everything works fine but they just won't talk to each other- help!