If drives are connected to onborad S130, then only SATA drives are supported. Please check below link for details.   [URL] 
I have installed two hard drives into my PE T330 server, without a Raid controller. The system does not recognize the new drives and the trays have a flashing green light. When I go into the system setup it shows the 2 drives as unknown. I moved a working drive from another slot and the drive is detected,.so this would rule out the slots being bad. The new drives are Dell branded Seagate ST6000NM0034.
PowerEdge T330 Hard Drives blinking green