Common interface type for storage devices in laptops and desktops.
Evolution of SATA Versions
SATA Revision 1.0: Transfers data at 1.5 Gbps over a 1-meter cable.
SATA Revision 2.0: Speed doubled to 3 Gbps.
SATA Revision 3.0: Speed doubled again to 6 Gbps.
SATA Revision 3.2: Increased to 16 Gbps over a 1-meter cable.
SATA in Computers
Used exclusively internally within computers.
External devices often use eSATA (External SATA).
Matches speeds of internal SATA.
Allows for a maximum cable length of 2 meters.
SATA Connectors
7-pin connector: For data transfer.
15-pin connector: For power supply.
Some hard drives also have a Molex power connector for compatibility with older power supplies.
Connection Characteristics
One-to-one connections for both data and power.
Single power connector from power supply to storage drive.
Single data connector from motherboard to storage device.
SATA connections use a single cable per storage device.
Motherboard and SATA
Motherboards have specific SATA connectors.
Different versions of SATA interfaces may be indicated by different colors (e.g., yellow, black, blue).
Direct connections from motherboard to storage devices are required.
eSATA Interfaces
eSATA offers external connectivity but with different connector types.
eSATA connectors are similar but distinct from internal SATA connectors.
Internal SATA: L-shaped connectors.
eSATA: Slightly larger with a different layout.
Separate cables are necessary for SATA and eSATA connections.
Storage Device Connectivity Options
Some external drives offer multiple connection options:
FireWire, USB2, eSATA.
Connecting external storage using eSATA:
Use an eSATA cable to connect the drive to the computer's eSATA interface.
Ensure both data and power connections are secured for device functionality.
Conclusion
Understanding the differences and capabilities of SATA and eSATA is crucial for configuring and utilizing storage devices effectively in both internal and external settings.