No working FOR PARTS ONLY This product is a lot of 2 4TB Western Digital Gold HD SATA hard drives, specifically the WD4003FRYZ-01F0DB0 model. These data center hard drives are designed for high-performance storage with a storage capacity of 4TB and a cache size of 128MB. They feature a SATA III interface for fast data transfer and are part of the WD Gold product line, known for its reliability and durability. Made in Thailand, these silver-colored hard drives are ideal for demanding storage needs in a professional setting.