How many amps is required of the AC power adapter of a Seagate external disk model st3300801cb ?
Q. What are the consequences of
a) an adapter rated too high
b) an adaptor rated too low ?
Definitely no marking on the case showing the rating of the adapter.
I ask as the AC –> DC power adapter has been lost, and a suitable replacement is needed.
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The power ratings are on the drive somewhere, usually near the plug.
a) you can get away with going a little higher, but not much as it will damage the drive.
b) it won’t work.
1.An AC adapter is just that. It converts AC electricity into DC electricity.
(Alternating Current to Direct Current)
2.The Seagate 300GB external harddrive, uses 120 volts AC electricity, or 240 volts AC electricity. ST3300801CB-RK
http://reviews.cnet.com/hard-drives/seagate-pushbutton-backup-external/4014-3186_7-31288961.html
Therefore you can’t run it like it is, with an AC to DC converter like a laptop AC adapter.
3.Now if you’re talking about yanking the harddrive out of the external harddrives case, you need to put it in some kind of external case to use it with a laptop. (The Seagate ST30300801CB-RK, has it’s own AC to DC converer inside it)
I don’t know if it’s a 2.5 inch wide laptop harddrive they use inside, or a 3.5 inch desktop harddrive. I’m willing to bet it’s a Sata harddrive, though! (I’d also bet it’s a 3.5 inch desktop unit)
1.http://www.tigerdirect.com/applications/category/category_slc.asp?CatId=2781&name=2.5-external-drive-enclosure&
2.http://www.tigerdirect.com/applications/category/category_slc.asp?CatId=2778&name=3.5-external-drive-enclosure&
If you use a higher rated power adaptor – it will work fine provided the voltage is correct
If you use a lower rated adaptor it will get very hot and may not provide enough power to run your drive properly. Long term it’s likely to fail from constant overheating.
Use the wrong voltage and you will damage the drive.