SIIG Legacy & Beyond DP SATA 6Gbps 2-Port PCI Express SATA Controller Card (SC-SA0L11-S2) Asmedia ASM1061 Adds 2 internal SATA 6Gbps channels to your PCIe system; Installs in standard height or low profile chassis with included brackets Supports port multiplier - up to 5 hard disks (max) on each eSATA port and up to 7 hard disks amongst the connected port multipliers. Note: The included Asmedia driver must be installed for port multiplier operation Works with the latest 6Gb/s SATA HDDs and backwards compatible with 3Gb/s and 1.5Gb/s HDDs Supports ATA/ATAPI-7 specification, Native Command Queuing (NCQ); Supports 48-bit LBA and verified to work with up to 4TB drives Compliant with Serial ATA specification, Revision 3.0, PCI Express Base specification, Revision 2.0