Seagate SATA to USB 3.0 Adapter
with USB cable and Power Supply
Yes, these came from existing new Seagate GoFlex external hard drives. I just needed the internal hard drive.
But the connectors and cables and power supply are used only once. They all work perfectly.
You can put in your own SATA 3.5" hard drive, and power it through USB.
I have two of these for sale:
Seagate GoFlex Desk Adapter USB 3.0 - PN 9ZH9P7-RAA
Seagate GoFlex Desk Adapter USB 3.0 - PN 100675058
Free shipping within the continental USA.