Vktech 3.5/2.5"SATA Hard Disk Dual USB All in 1 HHD Station Supports USB3.0, USB2.0, SATA I, and SATA II compatible Supports two 2.5/3.5 inch SATA Hard Drive, up to 6TB Supports Double SATA HD, Standard, convenient and trendy design The device is compatible with both PCs and Mac;OS compatible: Vista/XP/2000/ME/98SE, Mac OS 9.x, Win7 or higher This SATA HDD Dock allows you to plug 2.5in or 3.5in SATA Hard disk to your computer via USB port, and using two HD at the same time