The SDOCK4U33 four-bay 2.5/;3.5""; SATA HDD /; SSD docking station lets you dock and swap four drives from your desktop or laptop computer simultaneously, using a single USB port. Get the most out of your SATA III (;Gbps); solid state drives and hybrid drives with this UASP (;USB Attached SCSI Protocol); enhanced hard drive docking station. With performance up to 70%; faster than conventional USB 3.0 when paired with a UASP-enabled host controller, UASP ensures high performance by reducing bottleneck.Features Supports SATA III (;6 Gbps); and UASP for optimal performance. Independently powered SATA controllers. Built-in dual 40 cm cooling fan. Compatible with SATA revision I/;II/;III (;1.5/;3.0/;6.0 Gbps); drives. Compatible with USB 3.0/;2.0/;1.1 (;5 Gbps /; 480 Mbps /; 1.5 Mbps);. Supports both 2.5 in. and 3.5 in. form factor hard drives (;HDD); and solid state drives (;SSD);. Quad-bay, top slot-loading design with drive doors