Will the WD1002FAEX work on my motherboard (ASRock 755Dual-VSTA)?

WD Internal Drives Desktop & Mobile Drives
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I think the lowest you can go is sata2 3.0 and you do it by using jumpers 5&6 on the drive. you may loss a little speed using the old sata 1.0 but it will work though. But you can test it with both settings and see how much it effects you. I’m betting you won’t see a huge decrease though.