This front-edge position makes extension out the back to an external device even more difficult. Did this solve your problem? Follow SATA port 1 data to the hard drive. Cable select is controlled by pin USB is the most common external interface, followed by Firewire. One of them continues into a tiny 4-holed plug thing and the other connects to the box the AC adapter plugs into. Thanks for marking this as the answer.

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How satisfied are you with this reply? The host need only to eode for a particular sector, or block, to aatpi read or written, and either accept the data from the drive or send the data to it. At the time, in combination with the floppy drive, this was sufficient for most users. High security mode or Maximum security mode. Note that the transfer rate for each mode for example, In some systems, a third and fourth motherboard interface was provided, allowing up to eight ATA devices to be attached to the motherboard.

So, if there is only one master device on the cable, there is no cable stub to cause reflections. Sorry this didn’t help. Thanks for marking this as the answer.

I assume it has prongs, since it’s plugged into what I assume is another 4-holed molex cable, connected to another, connected to another tiny 4-holed plug thing. Iede jobs are necessarily limited by the speed of the optical drive no matter where it is.


The pins are closer together and the connector is physically smaller than the pin connector. For ease of reach from motherboard to device, the connectors tend to be positioned towards the front edge of motherboards, for connection to devices protruding from the front of the computer case. Views Read Edit View history.

Parallel ATA – Wikipedia

One of them continues into a tiny 4-holed plug thing and the other connects to the box the AC adapter plugs into. In fact, the drivers in the host operating system perform the necessary eid and serialization, and each drive’s onboard controller operates independently of the other. Let me know if iede doesn’t make sense and I’ll put a picture up on the blog.

However, some hard drives have a special setting called single for this configuration Western Digital, in particular. Thanks for your feedback, it helps us improve the site.

AT Attachment Computer storage buses Computer connectors. Also, standard-floppy disk drive emulation proved to be unsuitable for certain high-capacity floppy disk drives such as Iomega Zip drives.

Device is a storage peripheral. This setting is usually chosen by a jumper setting on the drive called “cable select”, usually marked CSwhich is separate from the “master” or “slave” setting. The traditional cable uses pin connectors attached to a ribbon cable. Pin 34 is connected to ground inside the blue connector of an conductor cable but not attached to any conductor of the cable. It was first introduced with interfaces specific to certain CD-ROM drives such as Mitsumi, Sony or Panasonic drives, [20] and it was common to find early sound cards with two or three separate connectors each designed to match a certain brand of CD-ROM drive.


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It is a common myth that the controller on the master drive assumes control over the slave drive, or that the master drive may claim priority of communication over the other device on the same ATA interface. These 4 SATA ports are your data lines. From Wikipedia, the free encyclopedia.

Parallel ATA

The other connector side-by-side to the data cable plugging into your hard drive is the power plug. A device connected externally needs additional cable length to form a U-shaped bend so that the external device may be placed alongside, or on top of the computer case, and the standard cable length is too short to permit this.

It has largely been replaced by SATA in newer systems. This arrangement eventually was standardized in later versions. Together with Control Data Corporation the hard drive manufacturer and Compaq Computer the initial customerthey developed the connector, the signaling protocols and so on, with the goal of remaining software compatible with the existing ST hard drive interface.