The Seagate ST 3500641AS has a SATA connector only, so if you have an older power supply check that it has a SATA connector before buying this drive. Next while this new drive was fairly quiet, it was definitely louder than my previous drive (particularly during avg access tests) which was completely inaudible inside my case over my system fans. I am not sure I would choose the Seagate ST 3500641AS if I was building a HTPC.



Link: MHW