SEDNA - USB 3.1 to SATA III Adapter Dongle USB 3.1, up to 10Gbps transfer speed Ideal for business database or large video files backup Compliant with the Universal Serial Bus 3.1 and USB 3.0 Specification Supports SATA 2.5" and SATA 3.5" Hard Drives ( you need 12V AC/DC adapter for 3.5" HDD, it is not included in this version)