The WD Blue 4TB PC Hard Drive is built for reliable everyday computing, storage expansion, and backups. Featuring 5400 RPM class speed, a SATA 6Gb/s interface, and 64MB cache, this 3.5-inch desktop HDD offers dependable performance for storing large files, applications, and media. Engineered with Western Digital reliability and durability, it’s an ideal choice for PC builds, upgrades, and external enclosures. ✅ Key Features: 💾 Capacity: 4TB storage for files, photos, videos & applications. ⚡ Interface: SATA 6Gb/s with 64MB cache for efficient data transfer. 🔄 Performance: 5400 RPM class speed for quiet & cool operation. 🖥️ Form Factor: 3.5-inch desktop hard drive, perfect for PCs & enclosures. 🛡️ Durability: Western Digital quality with proven reliability. 📂 Use Case: Ideal for desktops, secondary storage, and backups.