As you can tell I'm a n00b, but I looked over the threads and couldn't find any of this information. I recently bought an Asus RT AC66U wireless router, because I thought I was cool. But more things I didn't know AC is essentially useless to me bc I have no AC compatible devices, anywho... I have been trying to set up a central access storage with the USB ports on the router and an external hard drive I have. My goal is to set up my iTunes music and movie off it to be able to access it from anywhere in my apt.(because pluging in the hard drive is too inconvenient. Lol) I haven't had any issues setting it up initially, it's fairly plug and play. But today I was doing some experimenting with two different hard drives and notice one performed better than the other. MY QUESTION IS ... has anyone noticed benefits from using a portable external hard drive (with no external power) VS a traditional external hard drive which requires a socket ? I know setting up the iTunes can be a nightmare.... But the different hard drives question is at this point my biggest concern. Also, does plugging in my HDD to my router constitute a NAS or something lesser ? Thanks in advance... Hope to get some valuable info from y'all...