Micro drives are quite old technology and were common when PPCs were using 2002/2003 and even then were somewhat unstable.
Many people have found that the drivers have been removed from the newer operating systems for some unknown reason.
It seems that some devices still support them and others don't.
I did a quick google search for Magicstor Drivers but with no luck.
If you search long enough you may find the correct driver, Magicstor is a Chinese company and that can make it harder to find any support.
This page shows you the sort of thing you are looking for, this is not specific to you card, but you never know it may work. Try it at your own risk.