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August 21st, 2010, 3:27
I have question, why SATA power is 5 pins, but Molex is 4 pins, last that 3.3V need ?
I found my PSU that sata power cable is 5 pins, (5V,12V,3.3V) .
but molex is 4 pins, only(5V, 12V)
I want to use that molex to sata power adapter. missing 3.3V , only 5V and 12V, safe hdd device?
any advice?
August 21st, 2010, 3:58
The SATA standard allows for +3.3V power, but AFAIK, HDD manufacturers use only the +5V and +12V supplies, at least for their 2.5" and 3.5" models. The 3.3V rail, if required, is generated on the PCB by means of a DC-DC converter.
August 21st, 2010, 5:26
thanks,
if that hdd device face barcode label, tell us this device need 3.3V?
provide this information?
if missing 3.3V, no any problems?
August 21st, 2010, 5:45
I would think so, but there's always the product manual or other documentation.
Google should find it for you, if you use appropriate filters, eg ...
http://www.google.com/search?q=%225400. ... uctions%22http://www.google.com/search?q=%22WD10E ... type%3Adoc
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