1. Complies with the Serial ATA 3.0 specification and is backward compatible with SATA2.0 and SATA1.0; complies with the PCI-Express v2.0 specification and is backward compatible with PCI-Express v1.0. 2. Supports communication speeds of 6.0 Gbps, 3.0 Gbps and 1.5 Gbps; supports Gen 1i, Gen 1x, Gen 2i, Gen 2m, Gen 2x, and Gen 3i; 3. Support 4 SATA; support AHCI1.0 mode and IDE mode; 4. Supports native command queue (NCQ); supports FIS-based port multiplier switch or command switching. 5. Support hot plug and hot plug. Compatible with SATA6G, 3G and 1.5G hard drives Description: 1.Bus interface: PCI-Express x1 slot 2. Expansion interface: 4 SATA3.0 interfaces 3. System requirements: There is an available PCI Express X1 slot, which also supports PCI-E X2 X4 X8 X16 4. Operating system: Windows11/10/8/7 (32/64 bit)/Vista (32/64 bit)/XP/2003/2008/linux 5. Product model: PCE4SAT-M03 6. Product interface: PCI-E 1X (compatible with 1X, 4X, 8X, 16X) 7. Product rate: 6Gbps 8.2U chassis: supported 9. Main control chip: MARVELL 88SE9215 10. System support: WIN7 WIN8 WIN1O WIN11 LINUX 11. Test speed: The motherboard needs to support PCI-E2.0 or above, the speed is 380-410M/S Colour:As Shown Material:Copper+Iron Package Contents: 2 Set x Hard Drive Conversion Card (Including Baffle)