Hello
I would try connecting ONE sata hard drive only at first to get "warmed up"
then we can go from there
when you boot the computer; you should see the controller card bios load up >>>>> at the bios section of the start up process >>>>> are you seeing this
there should be a "Press something key" to enter the controller card bios >>>> then poke around in their for detection of drives and settings ????
post back with your findings
best regards
joe