Dock your 2.5in or 3.5in SATA Hard Drive over USB (Universal Serial Bus) 3.0 or e SATA, with the added benefit of a built-in Cooling Fan. The SATDOCKU3SEF Hard Drive Docking Station (e SATA/USB 3.0 to SATA) delivers quick & easy access to a 2.5in or 3.5in SATA hard disk drive (HDD) or solid state drive (SSD) through either e SATA or USB (Universal Serial Bus) connectivity, making it compatible with almost any system. Large capacity drives (tested with up to 4TB 3.5" & 1TB 2.5" drives) can be used to greatly enhance your computer''s storage/backup capabilities. The docking station features a built-in 80mm cooling fan that provides increased reliability & lifespan to HDDs by keeping the drives cooler. The variable fan speed control allows for on-the-fly adjustments for any type of HDD, or to balance cooling with noise. The HDD dock will also power down SATA drives after a period of inactivity (USB mode only) or when the PC is turned off, to help reduce power consumption & noise when not being accessed. The docking station supports full e SATA data transfer rates of up to 3 Gbps, & USB (Universal Serial Bus) 3.0 transfer rates up to 5 Gbps while backward compatible with USB (Universal Serial Bus) 2.0 system transfer rates of up to 480 Mbps. For an even more versatile storage solution, this e SATA/USB 3.0 HDD docking station can be used with the SATA to IDE hard drive adapter (SAT2IDEADP) enabling you to use 2.5in or 3.5in IDE hard drives with the dock.