Molex’s eSATA (External Serial ATA) interface provides high speed and solid connection for external storage solutions in computer and consumer applications, and includes cable assembly and through-hole bottom-mount plug.
External drives that use USB or 1394 interfaces are basically IDE in nature. The data transfer is achieved via a conversion chip that translates the ATA interface protocol of the disk drive to the USB or 1394 protocol. This will affect the host buses’ efficiency and CPU utilisation. For users who perform extensive backups frequently, this would be very time consuming. The eSATA storage bus is much more efficient and cost effective as it does not require a protocol translation chip.
Molex’s eSATA design addresses both the mechanical and grounding concerns. Retention features such as spring clips are added on the receptacle to enhance the retention force when mated with the detents of the cable-end connector. The flanges on the end of the connector provide good grounding to the chassis of the application.
To prevent the misuse of internal SATA cables with this eSATA, the ‘L’ shaped key is removed and the guide features are vertically offset and reduced in size. Also, the insertion depth is increased, thus the contacts are mounted further back. This helps prevent ESD damage. EMI protection, along with meeting the FCC and CE emission requirements, is ensured with an extra layer of shielding on the cable.
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