The ST31000524NS DELL EQUALLOGIC CONSTELLATION ES 1TB 7.2K SATA 3.5" HDD 9JW154-536 is a high-performance internal desktop drive designed for PCs. With a rotation speed of 7200 RPM and a storage capacity of 1TB, this HDD offers fast and reliable storage solutions. The product features Barracuda technology and is part of the Constellation product line by DELL EQUALLOGIC CONSTELLATION ES. This unit is a unit quantity of 1 and is designed for use in desktop computers with a SATA interface.