This cable helped me salvage an old laptop with a broken internal hard drive controller. This cable allowed me to run the OS from an external SSD as it was an Esata cable and I was able to get incredible boot speeds on this old Core 2 Duo laptop. The build quality of the cable is solid and can withstand flexing when opening and closing the laptop lid. All in all, this is an incredible deal and a must-have if you have a machine with an Esata port.