Features: 1. This card requires a 12V/3A 5.5 2.1mm supply to function properly 2. This adapter has a built-in chip that can convert disks to the USB interfaces of a regular motherboard, so USB computers can also use disks without the need for any cards. 3. If your USB interfaces does not have functionality, please connects our adapter, which can directly read/write hard drives . 4，After conversion, the SMART of the hard drive will display or information, but it will not affect normal read and write operations.. 5. Only supports SFF-8482 hard drives, not SFF-8639 U.2 hard drives. Supports / transmission rates of 6.0Gbps, 3.0Gbps, and 1.5Gbps. When used with USB hosts and devices, the throughput can reach up to 5Gbps, which is 10 times that of USB 2.0.. Specifications: 1. Input interfaces: USB 3.2 GEN1 5Gbps 2. Output interfaces: 29PIN Package Includes: 1 x USB to adapter converter 1 x 12V/3A power plug note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!