Hard Drive - 3,5", SATA III, 128MB cache, 5400RPM, For servers and Internal The WD Red Plus 4TB hard drive is one of the high load internal HDDs for NAS systems. The 3.5" format is designed chiefly for desktop computers and data centres. One of the main characteristics is obviously the rotational speed (RPM). The 5400 RPM RPM should meet the needs of most typical users. You can look forward to a total data capacity of 4000 GB. The drive has a 128 MB memory cache. All the data communication between the Western Digital hard drive and a computer or other device takes place via the SATA III interface. WD Red Plus 4TB Hard Drive Key Features Read speed up to 175 MB/s and write speed up to 175 MB/s 128 MB memory cache Western Digital 3.5" disk fits into classic larger bays Typically, the power consumption of the hard drive is 4,8 W, while in stand-by mode it makes 0.4 W It communicates with a PC or other devices using the SATA III interface HDDs don't have much...