Chipset: for Marvell 88SE9215 Rear 4-port SATA3.0 interface for easy wiring. Meets Serial 3.0 specification, backward compatible with SATA2.0 SATA1.0 Compliant with PCI-Express v2.0 specification, backward compatible with PCI-Express v1.0. Supports communication speeds of 6.0 Gbps, 3.0 Gbps, and 1.5 Gbps Support Gen 1i, Gen 1x, Gen 2i, Gen 2m, Gen 2x, and Gen 3i. Supports Four SATA Support AHCI mode Support native queue (NCQ) Supports based on port multiplier switches or switches. Hot-swappable and hot-swappable. Compatible with SATA6G, 3G and 1.5G Hard Drives Bus interface:PCI-E 2.0 x1 slot(Compatible PCI-E X2 X4 X8 X16 ) Extension ports:4 SATA3.0 interfaces Heatsink:with a big heat sinks for long time safe working. Feature:Single Port to 400MB Function:for SSD HDD IPFS Mining Bus rate:5Gbps System Requirements:for Windows 10/8/7 (32/64 bit)/Vista (32/64 bit)/XP/2003/2008/linux Colour:Black Material:PCB+Metal Package Contents: 1 x 4 Port SATA3.0 PCI-Express Expansion Card 1 x Low Profile Bracket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.