Fangrui Product Details 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