If the motherboard supports OVER ESATA, you can directly connect the hard disk or optical drive with the ESATA cable and this board.The introduction of the eSATA interface is undoubtedly a very good choice. "The ultra-fast transfer rate and efficient protocol make ESATA the most powerful mainstream external storage connection 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 , 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 transfer 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 interfacePrecautions: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 nothing 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 will 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 cable.Colour: blueMaterial: PCB+plastic+metalPackage Contents:1 * 9Pin USB Cable1 * 4Pin to SATA Cable1 * Power eSATA Converter CardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.