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  1. #1
    claudio
    Guest
    How to recognice an motherboard imac 350 from a 400
    I need to know how can I tell the difference from a motherboard with a 350 CPU and one with a 400 CPU.

    The problem I have is that I think my motherboard is dead and I'm looking for replacements.

    I Found a motherboard that could be a 400 but its really suspicious....

    a) The number is XXX -1131 -a the first nummbers could be 820
    b) is HAS an external monitor conector
    c) has not Firewire connectors.

    As far as I know all 400 have fire wire but none 350s have external monitor conector....

    What is it then....

    I send a foto as attachment.
    Attached Images Attached Images

  2. #2

    witeshark's Avatar
    Member Since
    Mar 09, 2004
    Location
    Miami FL
    Posts
    2,860
    Specs:
    G4 1Ghz OS X 10.4.7
    you may wanna e-mail these specs to an Apple store. Not many Mac users know this much about hardware service.

  3. #3
    Chamorro
    Guest
    Quote Originally Posted by claudio
    I need to know how can I tell the difference from a motherboard with a 350 CPU and one with a 400 CPU.

    The problem I have is that I think my motherboard is dead and I'm looking for replacements.

    I Found a motherboard that could be a 400 but its really suspicious....

    a) The number is XXX -1131 -a the first nummbers could be 820
    b) is HAS an external monitor conector
    c) has not Firewire connectors.

    As far as I know all 400 have fire wire but none 350s have external monitor conector....

    What is it then....

    I send a foto as attachment.
    I thought most (if not all) G3 iMacs had VGA connectors for external monitors...they're just usually hidden beneath some plastic panels.

  4. #4
    Chamorro
    Guest
    oh, and w/o FireWire, it sounds like a 350 mobo.

  5. #5
    claudio
    Guest
    But thats the weird thing, cause ALL the 350s that I've seen DON'T have external VGA connector......

    Does someone has a 350 mobo WITH external VGA?
    The Seller says he ripped it of an imac....maybe he could tell me the numbers in the sticker under the imac..... that'll be the best way......If he sends them

  6. #6

    D3v1L80Y's Avatar
    Member Since
    Feb 02, 2004
    Location
    PA
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    12,456
    Specs:
    MacBook
    Quote Originally Posted by Chamorro
    I thought most (if not all) G3 iMacs had VGA connectors for external monitors...they're just usually hidden beneath some plastic panels.
    The external VGA port was not added to iMacs until the DV editions came out in late 1999.
    After that, pretty much all iMacs had them. It is located behind a removable panel on the back.
    You can check all the specs on iMacs on Apple's site
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  7. #7
    Chamorro
    Guest
    Quote Originally Posted by D3v1L80Y
    The external VGA port was not added to iMacs until the DV editions came out in late 1999.
    After that, pretty much all iMacs had them. It is located behind a removable panel on the back.
    You can check all the specs on iMacs on Apple's site
    That's funny...my Rev A has got one!

  8. #8
    Badger
    Guest
    Quote Originally Posted by claudio
    I need to know how can I tell the difference from a motherboard with a 350 CPU and one with a 400 CPU.

    The problem I have is that I think my motherboard is dead and I'm looking for replacements.

    I Found a motherboard that could be a 400 but its really suspicious....

    a) The number is XXX -1131 -a the first nummbers could be 820
    b) is HAS an external monitor conector
    c) has not Firewire connectors.

    As far as I know all 400 have fire wire but none 350s have external monitor conector....

    What is it then....

    I send a foto as attachment.
    The memory slots are for 168 pin chips introduced with the slot-loading iMacs. So, you are right that you are looking at either a 350 board w/ vga or a 400 board w/o firewire. Either way you are right to be suspicious. IMO - Unless you can get a clear identification wait for another one.

    Badger

  9. #9
    Badger
    Guest
    In checking further I found some more info that may help: The 350 slot-loading iMacs had a VLSI chip, the one in the photo has a Lucent chip; the 400 sl-iMacs had two different motherboards. The early model had the firewire ports on a small, removable board and it had a central-mounted daughter board, the later board had the firewire ports on the main board and did not have a daughter board. My educated guess is that the picture is an early 400 board missing the firewire and daughter cards. I got this info from an Apple service manual I found at: http://home.earthlink.net/~strahm_s/manuals.html.

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