Serial ATA connector, SATA connector
Parallel ATA (Advanced Technology Attachment) and parallel SCSI (Small computer System Interface) are two dominant disk interface technologies in past long period. The parallel ATA (Advanced Technology Attachment) specification has defined the standard storage interface for PCs. Parallel ATA provides low cost, broad operating system support, and steady evolution. Over time, parallel ATA has continuously evolved to support higher speed and performance. While the parallel ATA interconnect has been the dominant internal storage interconnect for desktop and notebook computers, ATA compliant interfaces have a number of limitations that are exhausting their ability to continue increasing performance. Serial ATA (SATA) is a point-to-point connection and allows multiple ports to be aggregated into a single controller that is typically located either on the motherboard or as an add-in, RAID card. Serial Advanced Technology Attachment (SATA) allows the interface to operate at higher speeds without the problems associated with a parallel interface at higher speeds. As computer processor performance has increased, so have the read/write data rates of hard disk drive heads and media. SATA eliminates bottlenecks that occur in parallel AT interfaces. Serial ATA abandons the parallel concept in favor of a serial interface where only one bit is transferred per time. This allows the interface to operate at higher speed without the problems associated with a parallel interface at higher speed. Serial Advanced Technology Attachment (SATA) provides an interface to attach peripheral and other electronic devices to host computers or other host devices. A typical SATA system includes a host, a device and a communications medium that connects the host to the device. The host typically includes processing circuitry, volatile high-speed memory, and a host-side controller or concentrator. The device is typically a data storage unit. The Serial ATA communications cabling connects the host-side controller to the device and carries signals between the host and the device in accordance with the Serial ATA interface specification. A standard parallel ATA interface uses a 40-pin connector and a bulky flat ribbon cable that is becoming unable to accommodate further growth in the data transfer capacity of the interface. The serial ATA connectors according to the Serial ATA standard are featured in fewer electrical contacts than other conventional electrical connectors and are relatively tiny in configuration. Generally, the serial ATA connector comprises an insulative housing, a plurality of contacts assembled to the housing, a plurality of wires electrically connecting with the contacts, and a latching device for providing a reliable mechanical and electrical connection with a complementary connector. A SATA interface can accommodate growth in data transfer capacity and that uses a significantly smaller 7 conductor connector. The connector includes a receiving differential pair of conductors and a transmitting differential pair of conductors. The remaining three conductors are ground connections.
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