Expand your system’s storage with the reliable and high-capacity Seagate 4TB internal hard drive. This versatile 3.5-inch drive comes in two specialized models to meet your specific needs: the ST4000DM000 Desktop HDD, perfect for everyday computing, file storage, and PC upgrades, and the ST4000VX000 Surveillance HDD, engineered for the demands of 24/7 video recording in security systems. Both models utilize a standard SATA 6Gb/s interface for broad compatibility and straightforward installation, providing a massive 4TB of space for your applications, documents, media, or surveillance footage.