Gain quick access to up to four SSDs/HDDs simultaneously and swap drives in and out as needed 4-Bay SATA HDD Docking Station for 2.5 / 3.5in SSD / HDDs USB 3.1 (10Gbps) USB-C and USB-A interface and backward compatible with USB 3.0, 2.0 and 1.x Supports SATA I/II/III (up to 6 Gbps) Top-loading design with independent drive doors and drive controllers and ejection buttons SMART support Built-in dual 40 mm cooling fans Hard Drive Docking Station / SATA SSD & HDD docking station