What is "Dual FireWire 400" and can it act as a FireWire 800?

Discussion in 'MacBook Pro' started by ygv2000, Jun 27, 2010.

  1. ygv2000 macrumors newbie

    Joined:
    Jun 13, 2010
    #1
    Hi,

    I have a somewhat old Seagate FreeAgent external drive (like this).
    It has a switchable port controller, one has a USB2 and eSATA and the other has two FireWire 400 ports (like this: http://news.tigerdirect.com/wp-content/uploads/2008/03/switchable-interface-seagate-freeagent.jpg).

    Now, on the FW controller it says "Dual FireWire 400".
    1. What is Dual FireWire 400? And does it implicate that I can use both ports together somehow and get FW800 by that?
    2. If the first question is "NO" - can I use the 6pin FW cable I received with the drive and a 6pin to 9pin adapter on the MBP's end of the cable and settle for this? Or do I need to buy a new FireWire cable 9pin to 6pin?

    Thanks guys!
     
  2. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    1) It has two firewire ports. They can be used for daisy chainging. They cannot be bonded together to act as Firewire 800

    2) Yes, that should be fine
     
  3. ygv2000 thread starter macrumors newbie

    Joined:
    Jun 13, 2010
    #3
    thanks!

    1. In a sentence, could you give a little more info about "daisy chaining"?
    2. So if I get FW400, is it faster than USB2?
     
  4. robbieduncan Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #4
    1. You can use the second port to plug in additional firewire devices (like another hard drive).

    2. In general yes, a little.
     
  5. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #5
    1. Daisy chaining means the connection of one device A to another B, and connecting a device C to device B, and so on, thus building a chain.
    http://en.wikipedia.org/wiki/Daisy_chain_(electrical_engineering)
    With Firewire, than can be up to 63 devices.

    2. Yes. FW400 offers 35MB/s. USB 2.0 offers 10-15MB/s on PCC Macs, and up to 30MB/s on Intel Macs.
     
  6. ygv2000 thread starter macrumors newbie

    Joined:
    Jun 13, 2010
    #6
    Wow, thanks a lot!
    I got answers, I learned something on the way.. this was the most efficient forum thread I've ever took part in.

    Thanks again.
     

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