I did adjust the voltage, even the Mac given error saying the USB device is drawing too much power, then after several adjustments the Stickminer a longer stable and no Mac USB Error.. but doesn't stay much and all of the sudden shows OFFSegment Fault: 11
is this a heat issue or am I doing something wrong?
Your mac does not have enough power to run this. GO BUY A GOOD QUALITY POWERED USB HUB.
And don't run above 100Mhz unless you have a good fan figured out.