for any SATA 2 HDD, the power connector is longer. compared to the data transfer cable. wht is it so?,-------------- ,------the first set of lines represent the power connector second; the data connection cable.
at the same time as you're meaning are you waiting to boot off of the IDE stressful stress and get get admission to to the Sata stress, the answer is for particular. really connect the SATA stressful stress, and make positive the BIOS settings are set to boot from the IDE stress.
There are more pins on the power connector (because more are needed).
The sata power connector provides 3.3, 5v and 12v as well as two ground connections (in between the 3.3 and 5 and 5 and 12) I believe. Anyway, for the power connectors, a single pin has a maximum rating of 1.5A or so, and so they provide three pins if a device needs needs more current.
