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Need help making Sata Power to USB - 5V.? Answered

So basically I have a 2.5" Sata drive that I want to use with my W500.

The drive itself runs at 5v 700mA and I know that USB's support 5v - what im looking to make is something similar to:

http://www.ebay.co.uk/itm/USB-2-0-SATA-7-15-Pin-22Pin-Adapter-Cable-2-5-HDD-Hard-Disk-Drive-/170883882967?_trksid=p4340.m1374&_trkparms=algo%3DPI.WATCH%26its%3DC%252BS%26itu%3DUCC%26otn%3D15%26ps%3D63%26clkid%3D2166192030703395264

or better still this:

http://www.ebay.co.uk/itm/USB-TO-SATA-converter-cable-/300775404093?pt=UK_Computing_Drive_Cables_Adapters&hash=item46079c723d

Any help would be great. 

9 Replies

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frollard (author)2012-09-19

There is no direct pin conversion between usb and SATA. They are different protocols.

You need a proper usb>>sata conversion cable if you wish to plug in a sata drive to a usb port.

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mpilchfamily (author)frollard2012-09-19

To add to that... Even if you get the right cable and get the right translation between protocols to happen you will have a problem powering the drive. The USB spec calls for USB ports to offer a max of 500mA. So the power from the USB port will not be enough to handle the drive.

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frollard (author)mpilchfamily2012-09-19

often, usb>>sata cables will have a double usb plug, one for data+power, the 2nd (often red) is just for power from a 2nd usb port. Laptop drives can often run on a single usb port if they use a soft-start motor, but a full size desktop drive really wants a full power supply.

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lshoesmith (author)frollard2012-09-19

I actually should have put that in... I have a Sata to USB converter -but it is simply the communication device and provides no power.

It is the power that I am struggling with.... I thought that a dual USB setup might solve the problem but didnt want to do anything before confirmation.

Like I say the drive is a 2.5" Sata - it came from an old Macbook pro - so Im not sure if it has a soft start motor or not - but I am definitely not looking to power a 3.5" drive.

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frollard (author)lshoesmith2012-09-19

I've never seen a usb>sata that didn't have either a power input or was self contained and just 'worked' with enough input.

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lshoesmith (author)frollard2012-09-19

This is what I have:
http://www.ebay.co.uk/itm/USB-2-0-to-IDE-SATA-2-5-3-5-Hard-Drive-Converter-Cable-/300689677534?pt=UK_Computing_Drive_Cables_Adapters&hash=item4602805cde

With a separate power connector - e.i power brick converter with LP4 connector with LP4 to Sata converter.

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frollard (author)lshoesmith2012-09-19

http://www.ebay.co.uk/sch/i.html?_nkw=sata+power+adapter&_sacat=0&_odkw=sata+power+supply&_osacat=0&_from=R40

Virtually any 5v adapter should work with a molex>>sata power adapter (most drives come with one).

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lshoesmith (author)frollard2012-09-19

Yeah that is how I have been using this adapter thus far.

However I know have a W500 (Windows 8 tablet) and wish to take the 2.5 drive with me as I move from place to place, not having to 'plug in'. Hence the issue.

Again my fault for not specifying.

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frollard (author)lshoesmith2012-09-19

tablet computers are notoriously bad for not putting out much power on the usb port, you're probably stuck with the plug in, or getting a lower power drive

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