Replacement 3.5-inch 80G HDD for Desktop Computer — ST380815AS (436242-002 / 9YC131-021)

Replacement 3.5-inch hard disk drive for desktop computers. Model: ST380815AS. Capacity: 80G. Part numbers: 436242-002 and 9YC131-021. Ideal for repair or upgrade when you need a direct swap that matches these exact identifiers.