Features: The adapter does not need to drive hard disk test speed depends on the motherboard and hard disk support speed regardless of this riser. When connecting to the motherboard SATA check if it supports ESATA should open AHCI to support ESATA board hot-swap. If it does not support ESATA you shoud refreshDevice Manager after looking to refresh to find the need to restart the device after the part of the motherboard please understand. This product is only USB port and ESATA port sharing connector USB is provided by 9PIN signal not by SATA turned out. When use USB devices ESATA must supply USB cable into the motherboard and plug in floppy drive power cord. POWER ESATA intermediate plastic body has a tongue the tongue is above 7 terminals ESATA and outlet sides also have a contact sheet a 12V connection piece and the following are four terminals USB A / F's. This product can be inserted ESATA line ends can plug USB A / M line side but also to develop a new line-side interface while the combined ESATA and USB. PowerOver Esata and USB3.0 comparison: A: USB3.0 motherboard through PCI-E Switch USB3.0 interface then through USB3.0 USB3.0 hard disk inside the box and then connect to SATA hard disk. This child to transfer twice the speed will drop several. B: ESATA SATA signals in fact by this line can be directly connected SATA hard disk there is no loss of speed is relatively faster than USB3.0. Specifications: Power Esata: USB2.0 and ESATA connector only with only a 5V power supply. PowerOver Esata: USB2.0 and ESATA only connectors with 5V and 12V power supply. Hard disk without 12V power supply can only connect 2.5 inch Power Power Over Esata line: With 5V and 12V power supply can connect 2.5 inch /3.5 inch /5.25 inch hard drives and optical drives. Product Interface: two SATA 7PIN turn to two PowerOver ESATA Color: blue Net weight: 100g Package includes: 1 x Adapter