External Hard disk

External hard drives are portable storage devices that connect to computers via USB, Thunderbolt, or other interfaces. They're excellent for backups, file transfers, and expanding storage capacity.

Types of external drives:

HDD-based (Traditional):

• Larger storage capacities (1TB-20TB+)
• More affordable per GB
• Require external power for 3.5-inch models
• Slower transfer speeds but adequate for most uses

SSD-based (Solid State):

• Faster performance and more durable
• More expensive per GB
• Compact and lightweight
• No moving parts, quieter operation

Size formats:

• 2.5-inch: Portable, bus-powered (no external adapter needed)
• 3.5-inch: Desktop models, need power adapter, higher capacities

Popular brands and models:

Budget-friendly options:

• WD Elements: Simple, reliable, good value
• Seagate Expansion: Basic external storage
• Toshiba Canvio: Compact portable drives

Premium options:

• WD My Passport: Sleek design, password protection
• Seagate Backup Plus: Software included, various colors
• LaCie Rugged: Shock/water resistant for professionals
• Samsung T7: High-speed portable SSD

Connection types:

• USB 3.0/3.1/3.2: Most common, good speed
• USB-C: Modern, reversible connector
• Thunderbolt 3/4: Fastest speeds, mainly for Mac/high-end PCs
• eSATA: Less common, mainly older systems

Capacity recommendations:

• 500GB-1TB: Basic backup and file storage
• 2-4TB: Family photos, videos, comprehensive backups
• 8TB+: Professional use, extensive media libraries