Connect both an IDE and a SATA 2.5 & 3.5in HDD or SSD to your computer using USB 3.0, with support for UASP for optimal performance Works with USB desktop & laptop computers and SATA & IDE drives such as Samsung 840 EVO hard drive dock / HDD & SSD docking station / hard drive dock / SSD dock / HDD dock Test or benchmark virtually any hard drive or solid state drive Transfer files directly between SATA and IDE drives without a host computer Replacement for UNIDOCK3U & UNIDOCK3UEU