Seagate Momentus 5400.4 internal hard drive offers a reliable 160GB storage capacity for laptops and small form factor devices. This 2.5-inch SATA drive features a 5400 RPM spindle speed, balancing performance and energy efficiency for everyday computing tasks. Originally manufactured for Hewlett Packard systems, it utilizes a standard SATA interface for broad compatibility with various notebook models and external enclosures. The drive is identified by model number ST9160827AS and HP part number 463646-001.