Supports transmission rates of SAS/ 6.0Gbps, 3.0Gbps, 1.5Gbps. Offers a throughput of up to 5Gbps when used with a USB 3.0 host and device, 10 times the capability of USB 2.0. Only SFF-8482 SAS hard disks are supported; SFF-8639 U.2 hard disks are not supported. The card requires a 12V/3A DC 5.5x2.1mm plug power supply; the power supply is not included in the package and must be purchased separately. This adapter has a built-in chip that can convert SAS disks to the USB interface of a standard motherboard, allowing USB computers to use SAS disks without requiring a SAS card. If your USB interface does not support SAS functionality, connecting this adapter enables direct read/write access to SAS hard disks; supports Windows 7, Windows 10, and Windows 11. After conversion, the SMART information of the SAS hard disk may display incompletely or not at all, but this does not affect normal read and write operations. Color: Black Material: Plastic Package Contents: 1 x SAS Hard Disk Drive Adapter Only the above package content is included; other products are not included. Note: Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error allowance is +/- 1-3cm.