Syba SD-PEX40054 RAID Controller Card (Green) Style name:4-port Marvell   PCI-e x2 Slot is Required. (It works with a x16 video slot too)Based on Marvell 88SE9230 Chipset2-lane PCI-Express 2.0 Interface Supports Communication Bandwidth up to 10.0GbpsCompliant with PCI-Express 2.0 Base SpecificationUnique Hard Drive Activity LED Indicator Circuit Design: The LED Blinks for Read/Write ActivitySerial-ATA Interface:BootableChangeable SATA 6.0Gbps Ports (Internally, Externally or Their Combination)Up to 4 SATA Devices with Point-to-point ConnectivityCompliant with Serial-ATA Specification 3.0Supports Hardware RAID 0, 1, 10 and JBODHyperDuo Mode Supports Safe Mode (Mirrored Protection) and Capacity Mode (Cost-Optimized) to Build a System with SSD and HDD HybridSupports Native Command Queuing (NCQ)FIS Based Port MultiplierSupports SATA Port Hot-plugSupports AHCINote: To setup HyperDuo mode, please keep pressing Ctrl-M after computer power switch is on. For some motherboards, during the boot up, user might not be able to see the HyperDuo setup screen prompt.