Connect power esata devices to the esata and usb ports on your computer this esata and usb a male to power esata cable provides a 3 ft connection between an external drive enclosure equipped with a power esata port and the esata and usb port on a pcnotebook providing both power through usb and data through sata using a single cable the 3 ft esata and usb a male to power esata male cable is expertly designed and constructed of only top quality materials