The Seagate Barracuda ES ST3500630NS 500GB SATA NAS Hard Drive is a reliable internal desktop drive with a storage capacity of 500GB. This fully tested hard drive features a 3.5-inch form factor and utilizes SATA interface for efficient data storage and retrieval. The Seagate Barracuda ES model is designed for professional use in NAS systems, offering high performance and durability for storing large amounts of data. Perfect for businesses or individuals looking for a dependable storage solution, this hard drive is a solid choice for expanding storage capacity.