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Why are SATA power cords have 5 root?

Shenzhen STC Cable Manufacturer | Updated: Apr 27, 2016
Source:

The power of the ordinary hard disk and cd-rom interface for type D, consists of four core;Among them, the red line corresponds to + 5 v voltage input, yellow line is + 12 v voltage corresponding to the output, two black line to ground;More than 5 core SATA power a set of + 3.3 V, can reduce disk internal power supply secondary transformation, the loss of reduce the heat, to keep the hard disk power supply more stable
 
Add: standard 15 needle SATA interface definition
 
1 ~ 3 needle pink + 3.3 V (spare)
4 ~ 6 pin the black ground lead
7 ~ 9 needles red + 5 v
10 ~ 12 needle black ground
13 ~ 15 needle yellow + 12 v



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