It is not a "good" RAID controller. It is the same fakeraid crap you see integrated on motherboards.
Looks supiciously cheap too.. Bottom of the barrel cards tend to have many corners cut a la the firmware is stored on a ROM chip, so you can't even flash it..
You get what you pay for - it will probably "work", but you should expect to pay some $150+ for a brand new decent RAID card.