SATAII or I on late 2009 27" iMac superdrive slot?

Discussion in 'iMac' started by Jiten, Mar 13, 2011.

  1. Jiten macrumors 6502a

    Jiten

    Joined:
    Jul 16, 2008
    #1
    My apologies if this has been asked before but its quite difficult to find any straight answers using search and rummaging through old threads.

    I'm about to pull the trigger and replace my 2009 27 iMac's superdrive with an OWC SSD. Then I stumbled upon this:

    http://forums.whirlpool.net.au/archive/1561390

    Is it true that the late 2009 iMac's superdrive is limited SATAI? If this is so then it would probably be better for me to put the SSD on the Hard disk slot instead? Advice please. TIA
     
  2. Jiten thread starter macrumors 6502a

    Jiten

    Joined:
    Jul 16, 2008
    #2
    I took a screenshot of at the Serial-ATA Device Tree:

    [​IMG]

    Forgive my noobness, although I've been using Macs for a while its only now I'm into tinkering with them.

    Anyway, it says the SATA slot used by my ODD has a Link Speed of 3 Gigabit but the Negotiated Speed is 1.5 Gigabit. If I install a SSD will my Negotiated Speed will increase to 3 Gigabits? So if the Link Speed is 3 Gigabit does it mean that the ODD slot is indeed SATA II?

    Thanks in advance folks.
     
  3. alust2013 macrumors 601

    alust2013

    Joined:
    Feb 6, 2010
    Location:
    On the fence
    #3
    Yep, it's actually a SATA II port, however the drive is only SATA I, hence the lower negotiated speed. If you install a SATA II or III device, it will be the higher 3.0Gbps
     
  4. Anonymous Freak macrumors 601

    Anonymous Freak

    Joined:
    Dec 12, 2002
    Location:
    Cascadia
    #4
    Correct. It is a 3Gb/s port, but the optical drive presently there is only 1.5Gb/s. If you replace the drive with one capable of 3Gb/s, then you'll be good.
     
  5. Jiten thread starter macrumors 6502a

    Jiten

    Joined:
    Jul 16, 2008
    #5
    Many thanks for the confirmations guys. Much obliged.
     
  6. wurz macrumors newbie

    Joined:
    Sep 18, 2007
    #6
    I have just installed a Crucial C300 256GB SSD in my 2009 MacbookPro. It's gone into the superdrive bay, however it's only showing 1.5Gbs negotiated link speed.

    The mechanical hdd is showing 3Gbs. I'm wondering if the cheap caddy I purchased off ebay is the culprit here, although I have seen other threads complaining of this issue.
     
  7. Jiten thread starter macrumors 6502a

    Jiten

    Joined:
    Jul 16, 2008
    #7
    Hmm that is odd indeed but I noticed that there are folks who had similar experiences as yours.
     

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