You cannot use a card that requires third party drivers, You should get one that is supported by CORE natively.
There are essentially two options - cheap SATA cards, some chipsets known to work, some not so. Or an LSI SAS HBA that can also drive SATA disks. Which to pick - as always - depends.
How many disks are you planning to connect to that additional card?
Are you using a backplane with hot plug disks or direct cable connections?