External SATA Devices To Drop Power Cables

The Serial ATA International Organization (SATA-IO) has announced that it is working on a new specification that will provide power to external SATA (eSATA) devices without the need for a separate power connection. Called "Power Over eSATA initiative", the specification is expected to be completed sometime in the second half of this year.

Devices taking advantage of the new spec no longer will require a separate power cable but will draw power for a single drive directly from the host system using the Power Over eSATA cable. The SATA-IO said that the new cable will remain compatible with the existing eSATA connector and support the current maximum interface transfer rate of 3Gb/s. Power Over eSATA products are expected to be available on the market as soon as the second half of 2008.

News source: Toms Hardware

Report a problem with article
Previous Story

Xfire 1.86

Next Story

PlayStation 3 Now Costs Sony $400 to Manufacture

12 Comments

Commenting is disabled on this article.

I can see laptops with relatively affordable 32 or 64GB SSD for system and eSATA port for storage with only one cable attached.

Im all for that. I have a portable external drive from WD powered over USB. It's so much easier and means less messing around with cables.

X'tyfe said,
man they keep changing the specification :(
****ing alot of people off

dude, have you been living in a village thousand miles away? Computers have significantly changed from 386 days in the last few years and no, your fast 386 CPU won't fit in your newest motherboard

Andrey said,

dude, have you been living in a village thousand miles away? Computers have significantly changed from 386 days in the last few years and no, your fast 386 CPU won't fit in your newest motherboard :)


He'll make it fit. With a hammer.

If they can do this for eSATA, why can't they do it for regular SATA? If you could connect and power your SATA hard drives with 1 cable, that would make for a MUCH neater case, without having so many wires from the power supply (when you have 4 hard drives you'll see what I mean). Either way, this is good on their part. I look forward to seeing this soon.

excalpius said,
Indeed. If they can do this for esata, how about for sata, ahem?

More than likely the reason being is that you will still have to plug in a conector to the PSU to where the eSATA connector is on the board or daughter card. The motherboard itself only has so much juice running through it, that is why the drives themselves need to connect to the PSU, they'd have to pump a lot more power through the motherboard to power anything besides USB and Firewire which I believe are lower power specifications compared to hard drive and optical drives are.

Azmodan said,
That's good, and I hope they improve the transfer speeds, USB 3.0 is going to be faster than SATA itself...

Why would they need to improve speeds? How many hard drives do you know of that can even reach the full speed of SATA2?

Azmodan said,
That's good, and I hope they improve the transfer speeds, USB 3.0 is going to be faster than SATA itself...

Just keep in mind that USB has 2 major shortfall at data rates.
1. the bus is shared use 2 USB2.0 harddrives at once and you'll know it. (fundamentally i don't see this changing in USB3.0)

2. The data rate has bursts and cannot sustain it's through put as well as SATA

3. Latency of USB drives is higher due to translation of drives communication