Toshiba Canvio Basics 4TB Portable External Hard Drive. This plug-and-play storage device provides simple drag-and-drop file organization. It operates directly via USB bus power without requiring an external electrical outlet.Key Technical SpecificationsStorage Capacity: 4 Terabytes (approx. 3.64 TB actual usable space due to binary conversion)Hardware Interface: USB 3.2 Gen 1 (fully backward compatible with USB 3.0 and USB 2.0)Max Interface Transfer Rate: ~5.0 Gbit/sReal-World Read/Write Speeds: Roughly 100 to 140 MB/sInternal Drive Mechanics: 2.5-inch form factor spinning at 5,400 RPM