OK folks - I realise this has been asked before, though as you can understand I'm looking for updated info - hence the new thread. I'm looking to purchase a hard drive to attach to my Airport Extreme (first version of their n wireless model, a couple of years old) in order to gain a hard drive that I can back up my MacBook Pro to wirelessly via Time Machine. I know that Apple says that I should be able to buy a USB drive and attach it and it would 'just work', but recently I purchased an Iomega Prestige 1.5TB and tried it, but it was not recognised / would not mount when I attached it to the Airport Extreme - despite having followed all the instructions to reformat it before trying. Since then I discovered that many others had encountered the same problem with that particular drive. I'm wondering what your advice would be as to what drive I should purchase to achieve my goal? I understand that a NAS drive could be a possibility - in addition to SOME USB drives. I suppose I'd like to try and keep the price down - £90-150 if possible, which is why I'm not, at present, considering a Time Capsule (in addition to the fact that I already have the Airport Extreme). Thanks for any help.