The WD400BEVS-00RST0 is a Western Digital Scorpio Blue 2.5-inch hard disk drive with 40GB capacity, designed for portable storage and external enclosure applications. It operates at 5400 RPM with SATA 1.5GB/s interface connectivity and includes 8MB cache buffer for modest performance optimization. The 2.5-inch form factor makes it suitable for external USB drives, laptop upgrades, and compact storage solutions where power efficiency and reliability are priorities. Typical use cases include backup storage, archival systems, and portable media libraries in small business or personal computing environments.
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