Bus Type: PCI-Express (PCI-e x1) Speed: SATA III (6Gbit/sec) External connectors: 2 x eSATA Female Port Multiplier and Native Command Queuing support Supports serial ATA 2.6 specification Supports SATA III transfer speeds of 1.5Gbps, 3.0Gbps and 6.0Gbps Chipset: Marvell 9128 Standard and low profile back plates supplied Pin header for drive activity LEDs Software Compatibility: Windows Vista (32/64 bit), XP/Server 2003/8 (32/64 bit) Windows 7/8 2 Year warranty