If the motherboard supports POWER OVER ESATA, you can directly connect the hard disk or optical drive with the ESATA cable and this board. The introduction of the Power eSATA interface is undoubtedly a very good choice. "The ultra-fast fer rate and efficient protocol make ESATA the most powerful mainstream external storage connection method at present". The SATA interface on the host can be directly converted into a PowerOver eSATA interface, without occupying the PCI or PCI-E slot of the motherboard, just fix the riser card on the expansion slot of the chassis. In total, the following functions can be implemented: A: With the matching USB2.0 cable, you can turn out 2 USB ports. B: Plug in the SATA cable to turn out 2 PowerOver Esata ports, directly fer the SATA to the outside, and no longer need to disassemble the case, you can directly connect 2.5-inch hard drives, 3.5-inch hard drives, 5.25-inch optical drives, etc. Hardware Requirements: One motherboard or riser card with SATA interface Precautions: This adapter card does not need a driver. The test speed of the hard disk depends on the speed supported by the motherboard and the hard disk, and has to do with this adapter card. When connecting to SATA, it depends on whether the motherboard supports ESATA. The motherboard must enable AHCI to support ESATA hot-plugging. If it does not support it, it be found after the device manager is refreshed. Some motherboards need to be restarted to find the device. Please be aware. This product is only a shared connector between the US port and the ESATA port. The US is provided by the 9PIN signal, not the SATA port. When using ESATA to use a US device, you must plug the matching US cable into the motherboard and the floppy drive power cable. Colour: blue Material: PCB+plastic+metal Package Contents: 1 * 9Pin USB Cable 1 * 4Pin to SATA Power Cable 1 * Power eSATA Converter Card