Rosewill RC-216 PCI Express eSATA II x 2 / ATA 133 x1 RAID 0/1/0+1/JBOD mode Controller Card RC-216 can connect 2 SATA 3G and 2 ATA 133 HDD max Rosewill Magic Switch can allow you connect 2 SATA HDD totally You can active only two SATA channels either from 2 external or 2 internal SATA ports