Bus Type: PCI-Express (PCI-e x 1) Speed: SATA III (6 Gbit/sec) External connectors: 2 x e SATA Female Port Multiplier & Native Command Queuing support Supports serial ATA 2.6 specification Supports SATA III transfer speeds of 1.5 Gbps, 3.0 Gbps & 6.0 Gbps Chipset: Marvell 9128 Standard & 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