The IBM 500GB Pin 39M0181 and IBM FRU 39M 4517 are high-performance server hard drives with a storage capacity of 500GB. With a rotation speed of 7200 RPM, these 3.5-inch SATA II drives offer fast data access and transfer speeds. Perfect for use in servers and networking devices, these hard drives from IBM provide reliable storage solutions for a wide range of applications. Ideal for businesses and individuals looking for high-capacity, efficient data storage solutions.