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Question about Seagate ST3500641CB-RK 500 GB FireWire 400 (1394a) Hard Drive

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I bought this Seagate ST3500641CB-RK 500 GB FireWire 400 Hard Drive used on ebay but when it arrived it had the wrong power adapter. I can't find anywhere a brand name or number for the adapter. Is there someplace I can find this number or a cross reference to a after market adapter. Thanks, DM Green

Posted by dmgreen98 on


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Raghavendra Nagaraj

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I think the product is no more available. So I suggest you to contact your e-bay vendor and demand him to provide suitable adapter.. other wise change the HDD to any Western Digital Product

Posted on Jun 09, 2010


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Hi, I have a seagate ST3160203U2-RK problem with turnng it on the power adapter has a green light but when turn power supply on the hard drive, the green light on adapter goes out - the hard drive does not...

It sounds like the controller for the drive is shot. You will probably need a new enclosure as long as the drive itself is OK that should do it. What is probably happening is that the controller in the enclosure is broken and trying to pull too much power.

Need a replacement power supply, or at least need to know what input (volts and amps) the drive itself will take

Generic replacements for Seagate external drives are are pictured with a circular cross section plug with a yellow tip. They are rated at 12V 2A. They can be found on both eBay and Amazon.
If they look the same as your old supply, anything with that rating should be suitable.

There should be a sticker on the old unit with it's electrical characteristics, power ratings in and out.

Please i need the power adapter rating for seagate

Have you got the original power adapter?
If so the voltage details are printed on the label on the bottom of the adapter.
If the external USB Seagate hard drive houses a 31/2" drive then it requires an power adapter that provides +12 volts and +5 volts both supplying approx 2000mA of current.
If the Seagate uses a 21/2" (laptop) hard drive then it only requires +5 volts power adapter.
The only problem is the power connector to the external drive, make sure it suits the external hard drive unit and the power pins are correctly wired for the Seagate. If the polarity of the plug is incorrect lt wired (ie reverse polarity) then it could damage the USB hard drive and adapter case.

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Simple, Connect your HD and boot computer using win XP CD and try to create a partition again using unpartioned space ! - xome

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if your system some virus hope it is not read......better you try any other some card reader or pen driver if it read you try other OS ....

Power supply for Seagate 400GB

Ebay or may be a solution.
I've used those Seagate portables and 2 have caused problems.
Or disassemble the unit, remove the drive and buy a portable case or USB adapter.
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