・This is a stand for connecting 3.5" SATA HDDs, 2.5" HDDs, and 2.5" SSDs to a computer. It supports USB 3.0. ・There is only one slot, so you cannot copy data between drives. ・I was using it until recently, so its operation has been confirmed. ・It comes with a USB 3.0 cable and a power cable, so you can use it right away. ・Shipping will be via "Yu-Yu Mercari Bin" (Japan Post).