This Seagate internal hard drive is a high-quality unit that boasts a storage capacity of 4TB, making it an excellent choice for those with demanding storage needs. The drive is compatible with servers and has a rotation speed of 7200 RPM, which ensures fast and reliable performance. It has a SAS interface, a cache of 128 MB, and supports HDD drive types. The Seagate model ST4000NM0023 has a form factor of 3.5 inches, making it an easy fit for most computers. It features a removable design and is part of the Constellation product line. The hard drive is silver in color and is suitable for use in various devices. With its excellent features and high capacity, this unit is a great investment for anyone looking for reliable and effective storage solutions.