PCIe SATA3.0 array expansion card with four SATA Gen III 6Gb/s channel host controllers, providing server-level functions for desktop computers. This adapter supports the use of the industry's newest and fastest 6Gb/s hard drives, while providing backward compatibility with traditional SATA1.5Gb/s, SATA 3Gb/s drives. It will enhance system performance for every type of computer user. Each PCI-Express 2.0 channel provides up to 500MB/S throughput. Using the RAID function, the SATA connected to this controller can be easily configured as 4 independent ports by the driver without RAID function. Main control chip: Marvell 9215 Bus rate: 5Gbps Bus specification: PCI-E 2.0 x1 Interface specification: SATA3 7Pin x 4 Interface speed: about 400MB/s Support interface: PCI Express slot Support system: windows, Synology, LIUNX, forMAC, NAS, etc. 1. Marvell 88SE9215 Chip 2. 4 Internal SATA 6Gb/s Ports 3. Compliant with PCI-Express Specification v1.0 4. Compliant with Serial ATA Specification 3.0 5. Supports Communication Speeds of 6.0 Gbps, 3.0 Gbps, and 1.5 Gbps 6. Hot Plug and Hot Swap 7. Supports Native Command Queue (NCQ) 8. Supports Port Multiplier FIS Based Switching or Command Based Switching 9. Compatible with SATA 6G, 3G and 1.5G Hard Drives Colour:Green Material:PCB+Metal Package Contents: 2 x 4 Port SATA3.0 PCI Express X1 Expansion Card 2 x Low Profile Bracket