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Thread: Disk on Module Help

  1. #1

    Default Disk on Module Help

    Hello, me again. I've had good luck with DOM's in the past. Latest project is this IBM thinkpad 380ed. Trying to replace a failed 4Gb travelstar IDE drive with a 16Gb DOM. However due to an oversight on my part, the DOM won't work for obvious reasons. Ugh. Are there any adapters or cables I can buy to make it work? Thanks!

    IMG_4656.JPG

  2. #2

    Default

    Can something like this do it? Or are the formats un-compatible?

    http://www.cablesonline.com/44pinbomatom.html

  3. #3

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    You need to get a 44 pin DOM.
    PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

  4. #4

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    Quote Originally Posted by Stone View Post
    You need to get a 44 pin DOM.
    This is a 44-pin DOM, just of the wrong gender

    I've used one of those gender changer in the past, for the exact same reason/mistake
    61lOl-xciCL._SX466_.jpg

  5. #5

    Default

    So it is...

    But it's not the wrong gender -- they're all female.
    PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

  6. #6

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    Sounds good, thanks guys. yes rookie mistake.

    Question though, if I get a gender changer, the DOM can be plugged in either way around. How do I not smoke it?... or worse the motherboard. I see there is a key in its casing of the DOM, however if I get the adapter I linked to above, it can still connect to the motherboard either way around.

  7. #7

    Default

    Changing the gender is not enough. The DOM is a different pitch.
    PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

  8. #8
    Join Date
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    Default

    Quote Originally Posted by tblake05 View Post
    Question though, if I get a gender changer, the DOM can be plugged in either way around. How do I not smoke it?... or worse the motherboard. I see there is a key in its casing of the DOM, however if I get the adapter I linked to above, it can still connect to the motherboard either way around.
    I'm willing to bet at least a nickel that trying to use that bare double-ended header won't do what you want want. If the DOM in question is supposed to plug into the empty socket where a cable would go (a situation that mostly exists in the obscure embedded applications 44 pin DOMs are targeted at) then using a bare header will flip the two pin rows compared to what they should be. (It might be kind of hard to explain without a picture, I guess, although since you've mentioned the key would be flipped I think you get it.)

    44 pin DOMs are weird and generally aren't really meant for laptops. For instance, I have in my possession an industrial 44 pin DOM of the horizontal type that has male pins instead of female but included a male-male gender changer to allow it to be plugged into the male motherboard plug *and* the DOM itself has a passthrough header so a cable can be connected to it and/or another DOM stacked on top. (IE, the DOM has male pins on both sides of the PCB.)
    My Retro-computing YouTube Channel (updates... eventually?): Paleozoic PCs

  9. #9

    Default

    Quote Originally Posted by Eudimorphodon View Post
    I'm willing to bet at least a nickel that trying to use that bare double-ended header won't do what you want want. If the DOM in question is supposed to plug into the empty socket where a cable would go (a situation that mostly exists in the obscure embedded applications 44 pin DOMs are targeted at) then using a bare header will flip the two pin rows compared to what they should be. (It might be kind of hard to explain without a picture, I guess, although since you've mentioned the key would be flipped I think you get it.)
    You are correct. I've done it with a 40 pin DOM.

    You need two of those double-ended headers with a short ribbon cable between them to do a second 'flip' to get the orientation right.
    PM me if you're looking for 3" or 5" floppy disks. EMail For everything else, Take Another Step

  10. #10
    Join Date
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    Default

    Honestly for a laptop I'd suggest trying either a direct-plug CF or SD adapter. (I'm very fond of the latter myself.) They have the right connector orientation/gender for laptop disk replacement and, again, 44 pin DOMs are just weird compared to desktop ones. There are also laptop PATA->M2/MSATA adapters, but I hear tell they're not particularly reliable with older (pre-UDMA) IDE hosts. I have a couple of those in G4 Powerbooks and they work great, but they're running at UDMA/66 or faster.
    My Retro-computing YouTube Channel (updates... eventually?): Paleozoic PCs

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