Purpose: Quick access to 2.5 "or 3.5" SATA HDD&SSD. The USB 3.0 port connects any standard 2.5 "or 3.5" SATA HDDS & SSDS to your computer/laptop and can support up to 6TB of drive capacity, adding additional storage space to your computer, quickly backing up and transferring data, and bringing a lot of convenience to your wor。Accessibility: This SATA to USB cable comes with a DC port and comes with a 12V/2A power adapter, which is used with a (3.5-inch) hard drive to ensure adequate power supply while working, but for laptop (2.5-inch) drives or SSDS, you don't need power