Rosewill RX309 is a 2.5” & 3.5” HDD Docking Station with SATA lll to USB 3.0, Charging & USB 3.0 Hub. It supports super speed USB 3.0 up to 56Gbps and is compatible with 2.5” and 3.5” SATA I/II/III HDDs or SSDs up to 4TB. The device has three USB 3.0 host ports, a Charging Downstream Port (CDP), and a Dedicated Legacy Battery Charge Port (DCP) that supports Battery Charge Rev 1.2 specifications (BC 1.2). It also features a One-Touch Backup function (OTB) that allows for easy data backup with just one button press.