Hi All, I have a June 2009 17" UMBP. I will soon be starting work whereby I will be hiding all cables under the floor from one of the room to the other and plan on using wall-plates at each wall to which I can then connect stuff as need be. I am really not that technical so please forgive me if I come across really ignorant & Firewire really confuses me - there seems to be so many different types of cables and connectors, that I just do not know which to get. I guess I would want Firewire so I can at least use it to do higher speed transfers from the UBMP to say a hard drive or future Apple media computer/NAS as USB is way too slow. If I am correct, the 17" UMBP has a 9 Pin Firewire 800 port? My idea is to have a short Firewire cable connected between the UMBP and first Firewire Wallplate or Keystone Jack Couplers (KSJCs) preferably. At the back of this first wall-plate will run a cable of about 6 metres (20ft) under the floor to another wall-plate/KSJCs at the other end of the room. From this second wall-plate/KSJcs, I plan to connect a second shorter Firewire cable again to say the hard drive/Future NAS etc. All I know at this stage (if correct) is that I will need a Firewire cable connection that my June 2009 UMBP has Firewire 800/9-Pin to connection. What others do I need whilst keeping maximum transfer capability?: 1) Are there any Firewire 800 9-Pin Wall-plates or Keystone Jacks Couplers? (I can only find Firewire 400 & 6 Pin on the web) 2) Can all the different Firewire's be mixed up and what are the consequences - mixing 400 & 800, 9-Pin & 6-Pin etc 3) How should I best cable this and which cables should I get at the various stages - would I ideally want Firewire 800/9 Pin cables all the way? 4) Can I bypass all this and still use the Firewire 800 port on my UMBP but instead of using Firewire Cables use some sort of adapter & use Cat5e/Cat6e cables instead and still have the high speeds? (sorry if that is really stupid - just clutching at ideas!) - What other options can I try? I have attached a diagram as best I can to illustrate better what I am trying to do - please kindly have a look and advise me of my best options, I would be so extremely grateful! Please kindly explain very simply as I am a novice & lost as it is! Many Thanks, Bazzy!