My wife's laptop is Windows 8.1 and she has 21GB free out of 1TB. I want to put her iTunes library (500GB) on an external hard drive. I have a Seagate 2TB NAS external hard drive. This will probably take 12-24 hours over our network. We have U-Verse 12-18 MBPS or whatever speed it is. Would it be faster if I did this move USB 3.0 to USB 3.0? If so how do I get this Seagate to even show up as a USB drive? I've tried plugging a USB 3.0 cord in but it just won't show up that way. Sorry for all the questions.