Summary
Highlights
SATA (Serial AT Attachment) is a standard interface for connecting hard drives inside desktop computers. It has seen several revisions, with speeds increasing from 1.5 gigabits per second (SATA 1.0) to 16 gigabits per second (SATA 3.2). There's also an external version called eSATA.
SATA drives use two distinct physical connections: a longer 15-pin connector for power and a smaller 7-pin connector for data. Some drives also support older Molex power connectors. SATA uses a direct, one-to-one connection between the drive and the motherboard, meaning one drive per cable. It does not support daisy-chaining.
SATA connectors are easily identifiable on motherboards, often located near the bottom. Motherboards can support multiple SATA connections, such as four or six, allowing for the connection of an equal number of storage drives. The video demonstrates examples of SATA 2 and SATA 3 connectors.
Connecting a SATA drive involves plugging in both the data cable to the motherboard and the power cable. The video illustrates the one-to-one relationship between motherboard connectors and drive connectors, emphasizing the need for both data and power connections for drive operation.
eSATA is an external version of the SATA standard. While the signal transmitted is similar to internal SATA, the connectors are different. Internal SATA connectors have a distinctive L-shape, while eSATA connectors have a different style. eSATA cables are specifically for external connections and are not interchangeable with internal SATA cables.