When hooking up my 120 Gb external hard drive to my laptop, I noticed there was an additional power supply required, DC by the look of it. I can't seem to find the correct size of outlet, or even an adapter. Could you tell me what the exact power cord voltage would be & possibly direct me to a major chain or website where I might buy a new one?

The 2.5 inch external drive (laptop drive) does not require separate power supply because USB cable can supply enough power for this drive. The 3.5 inch external drive (desktop hard drive) requires separate power supply and it depends on the model.

12VDC, 1.5A external power adapter Well that is what this page says, it's not your 120GB drive but unsure if it's no the same model maybe. However all external HDD that need a power supply should be needing 12 volts, as they are just internal drives mounted in a shell and some simple circuitry to power and connect it.

The 1TB My Book Drive usually requires an additional external power supply and does NOT power up from the USB cable alone. Only the small 2.5" drives requires no addition power supply.

Hi Dave.

The problem you are having is the adaptor you tried is the right voltage but not the correct ampage. You require a 12v dc adapter with a rating of at least 1-Amp. The switchable supply you purchased would be well under the required level, probably 400ma (milli-amp), in other words about half the needed amount. A cable modem power adapter would be sufficiant. If you have one, make sure it is the correct voltage and polarity, positive pole (+) usually the inner pin on the end of the connector. Hope this is of some help to you.

Well, looks like Beyond Mico web site has gone to the great Beyond.

From units I have been able to find online, it looks like the power supply is between 20 and 40 watts.

The hard drive unit itself should be able to supply you with the required DC input voltage (hopefully there is some kind of label on the enclosure).

You could try one of these or something similar. It comes with 6 interchangeable heads and has adjustable DC voltage. This is just one of many available.

http://www.amazon.com/Hosa-ACD477-100-240V-Voltage-Adaptor/dp/B000Z31G3M

I cannot guarentee any of these supplied heads will fit your particular drive (same with the dc voltage). But some local retailers often have these types of adapters and you might be able to determine what size you need by looking at one.

I have used DC units similar to these in the past when I have lost a power supply.

Hopefully with a minimum of effort you can get a working solution.

first of all , you are looking at the wrong voltages. The important voltage is the DC OUTPUT, which is the voltage the external harddrives use AND the polarity of the plug attached to the harddrive end of the cable.
if both the harddrives have say 12v dc output and both have the insignia of the center conductor being + (posative) then you can interchange them. and you CAN run a 9volt unit with 12volt DC power, but not the other way around.
Look at your power adaptors again for the OUTPUT and polarity.
should be a half-circle with lines depicting the polarity(+,-) of the center and sheild connections to the hard drives printed on both the harddrives and the power adaptors . This can also be tested with a dc volt meter while the adaptors are plugged into the wall.
DO NOT try to test the AC end while plugged in!!
Regards

you inverter was not fully charged because it requires a 110/220 v ac as specified in the manual; to charge it so it is impossible for the aircraft 15vdc to charge it

I think you might find this link most useful, from the Seagate Community Forums.

http://forums.seagate.com/stx/board/message?board.id=onetouch&message.id=1973

In short, others have had great difficulty buying Maxtor replacement power adapters, however you can buy a generic 12V, 3A DC power supply for $15-20 from a number of sources. Confirm your actual power requirements by referring to the product label on the drive itself.

Hope it helps,
Mike

The only DRiver is already supplied with OS 2000pro & up as Firewire. Problem connecting is due to the Supplied Power Supply. Wattage is too low at 1.5. Try a higher Power Supply.

The PSU for my Maxtor 500Gb 9NZ2A4-500 drive is 12V DC, 2A rating, 2.1mm "plug" with centre "hole" as positive.

Regards, kbsguru