So upon receiving my 640GB Black Caviar WD harddrive, I noticed that it didn't come with SATA cables or anything else, except for the drive. I was wondering if I would have to purchase some SATA cables on my own, or if they would come with some other component (maybe my MB?). I haven't opened anything yet because I am not yet ready to build, and this is my first build!
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Chances are, if you bought a retail motherboard, it will come with at least one SATA cable. If you already have the mobo, read the box, it should say what's included inside.
I just finished doing the same thing as you.And yes,your new motherboard should come with a few extra sata cables,but depending on your build,it wouldnt hurt to purchase a few extra.