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    Upgrade Clevo P157SM-A with TPM 1.2 Module

    Discussion in 'Sager and Clevo' started by cgneedsanewone, Sep 7, 2015.

  1. cgneedsanewone

    cgneedsanewone Newbie

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    Hi, I'm thinking about getting a P157SM-A, unfortunately does the one I was offered not have a Trusted-Platform-Module, even though it used to be offered by Clevo in their original Specs (as an option) - so the question is: Does it pay off to buy a barebone, assemble it and solder in such a Module? (Infineon SLB9635TT, exactly the same one Clevo used to integrate; just to ensure compatibility)
    And: Does anyone of you know, if it will actually work or is there some sort of software-lock as well?
    One more question: As I don't have my unit yet, I'd like to ask you, the more experienced P157SM-A users, to tell me if I was correct with my presumption about the location of the TPM-Module:
    Do, the ones who actually have one inside their notebook, have a black-chip soldered on there? The number of connector would be suitable (14 on both sides).
     
    cgneedsanewone, Sep 7, 2015
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  2. t456

    t456 1977-09-05, 12:56:00 UTC

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    It's optional for Clevo's customers (resellers), not the end-user. Might try different resellers or a used model.
    Perhaps, but you could also use a SLB9655TT. According to the ESM there's been a revision; 635 = TPM 1.2 and 655 = 2.0? Either way; might be difficult to find a single chip for sale, instead of by the lot.
    Not a software-lock, at least. But despite missing the chip itself, it depends on whether the non-TPM boards also lacks its concomitant resistors and capacitors *:

    [​IMG]

    They might very well have left out those part as well; it's cheaper, after all. If so, then ... well ... extensive project ahead. An after-market motherboard swap would be easier and, though expensive, reselling the old non-TPM motherboard would recuperate a bit. Hmm ... cheaper option is to inquire in the Owner's Lounge; someone might be willing to exchange TPM for non-TPM mb.

    * Technically, there's also the motherboard traces going from tpm to the various ics. But these are practically free-of-charge, so it doesn't make sense to leave them out. Try a multimeter on the solder blobs of the voltage pins; very likely you'll find 3.3V there. Remember that in case you need some internal power source for modding; there's disused blobs all over the place and these are perfect for that purpose.
    That would be a good guess; very close to the EC. No need for guessing, though; just read the label on the mb, this will say "U13".

    ps.
    What's the use of TPM? Would think de-soldering the chip is preferable?
     
    t456, Sep 7, 2015
    #2