Seagate is a real industry giant in the hard drive market, where you can barely get past if you want to build a high-memory PC system. The range of models covers all segments - from small (2.5 inches) to large (3.5 inches), from green IT (at lower speeds) to high-speed (at 7,200 rpm), from home users to professional environment.The Seagate BarraCuda HDD 2.5 inches at a glance:Compact 2.5-inch format with 4 TB capacityThe Seagate BarraCuda HDD is fast, reliable and versatile140 MB / s data transfer rate & 128 MB cachePerfect for mobile storage, external storage systems and all-in-one PCsReliable data storage with incredible versatilitySeagate presents the BarraCuda, an extremely versatile and reliable HDD storage device that provides ample space for all types of files. The data carrier can ideally be used in spacious (!) Laptops, mobile storage systems, external storage systems, all-in-one PCs or ultra-thin desktop PCs. Especially useful is the multi-tier caching technology used, which allows applications and files to load faster than ever from the HDD. Responsible for this are intelligent NAND flash levels, DRAM and media cache technologies, which optimize the data flow and improve the reading and writing performance.The data transfer rate of this 4 TB version of the BarraCuda reaches up to 140 MB / s and therefore provides a first-class PC experience for end users. However, the BarraCuda achieves this value with a speed of 5,400 rpm, which results in significantly lower energy consumption. The cache is very large at 128 megabytes, which makes the hard drive a compact alternative to larger 3.5-inch HDDs.Note: Due to the height of 15 millimeters, this hard drive can in most notebooks do not obstruct.Technical details:Dimensions: 69.85 x 15 x 100.35 mm (W x H x D)Format: 2.5 inchesWeight: 190 gCapacity: 4 TBSpeed: 5,400 rpmCache: 128 MBData transfer rate: up to 140 MB / sConnection: SATA 6GPower consumption (idle / read / write): 1.1 / 1.9 / 2.1 WStarting current: max. 1.2 AOperating temperature: 0 - 60 C