This 4TB external hard drive (7200 rpm) features an eSATA port for enhanced connectivity. It is ideal for frequent and/or professional use. Quiet fan-free design. Easy installation. USB 3.0/3.1 Gen 1 Interface options. PC and Mac compatible. SB 3.0 external hard drive comes in a stylish brushed black aluminum enclosure case. Backed by the manufacturers 1-year limited warranty.