SATA and eSATA Interfaces

Overview

• SATA (Serial ATA Attachment)
  • Common interface type for storage devices in laptops and desktops.
  • Used exclusively inside computers.

SATA Versions

• SATA Revision 1.0: 1.5 Gbps, 1-meter cable
• SATA Revision 2.0: 3 Gbps, 1-meter cable
• SATA Revision 3.0: 6 Gbps, 1-meter cable
• SATA Revision 3.2: 16 Gbps, 1-meter cable

SATA Connectors

• Data Transfer Connector: Smaller 7-pin connector
• Power Connector: Larger 15-pin connector
• Molex Connector: Alternative power option for older systems
• One-to-One Connections: Single power and data connectors per drive

Motherboard Connections

• SATA Interfaces on Motherboard
  • Multiple SATA connectors, e.g., SATA Revision 2 and 3
  • Color-coded connectors (varies by motherboard)
  • Direct connections from motherboard to storage devices
  • Each storage device needs power and data connections

eSATA (External SATA)

• Matches speeds of internal SATA versions
• Maximum Cable Length: 2 meters
• eSATA Adapter Cards: Provide external SATA links
• Connector Differences:
  • Internal SATA: L-shaped connector
  • External eSATA: Slightly larger, different layout
• eSATA Cables Required for eSATA connections

Combined Connectivity Options

• Some storage drives offer multiple connectivity options:
  • FireWire
  • USB 2.0
  • eSATA