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What's inside a ThinkPad 700, et. al., FDD module?

Older ThinkPads from the 300, 500, 600, 700 Series, iSeries, Transnote etc.
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branpurn
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What's inside a ThinkPad 700, et. al., FDD module?

#1 Post by branpurn » Wed Mar 04, 2026 3:33 pm

Would I be able to buy a dead ThinkPad 700 FDD module and extract an IBM proprietary to standard FDD connector...?

...similar to if I buy a dead ThinkPad 700 HDD, I can extract an IBM proprietary to standard 2.5'' IDE laptop HDD connector?

Image

solidpro
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Re: What's inside a ThinkPad 700, et. al., FDD module?

#2 Post by solidpro » Thu Mar 05, 2026 5:00 am

I have both, but why are you trying to?

The hard drive isn't IDE in a 700C, it's an ESDI drive because the machine is MCA architecture.

btw Imgur doesn't work in the EU/UK. Blocked. Maybe use imgbb or similar?

RealBlackStuff
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Re: What's inside a ThinkPad 700, et. al., FDD module?

#3 Post by RealBlackStuff » Thu Mar 05, 2026 7:12 am

Imgur works fine for me in Ireland.
Lovely day for a Guinness! (The Real Black Stuff)
But I actually prefer Murphy's from Cork!

branpurn
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Re: What's inside a ThinkPad 700, et. al., FDD module?

#4 Post by branpurn » Thu Mar 05, 2026 9:10 am

solidpro wrote:
Thu Mar 05, 2026 5:00 am
I have both, but why are you trying to?

The hard drive isn't IDE in a 700C, it's an ESDI drive because the machine is MCA architecture.

btw Imgur doesn't work in the EU/UK. Blocked. Maybe use imgbb or similar?
Maybe some wackiness with a FDD ribbon extension out the front of my 755C to connect to an FDD emulator

My 755C accepts 2.5'' laptop PATA/IDE drives with the connector extracted from a dead drive

Image is essentially illustrating the FDD module in mind, and an OEM HDD, not very important

axur-delmeria
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Re: What's inside a ThinkPad 700, et. al., FDD module?

#5 Post by axur-delmeria » Thu Mar 05, 2026 9:29 am

I see two possibilities:

* The proprietary connector is soldered to the floppy drive's main circuit board

* It's a separate board with a 26-pin flex cable most laptop floppy drives have at the other end.

Question:

Does the Thinkpad 700 have a connector for an external floppy drive? If yes, you can hopefully make use of that.
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solidpro
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Re: What's inside a ThinkPad 700, et. al., FDD module?

#6 Post by solidpro » Thu Mar 05, 2026 1:08 pm

RealBlackStuff wrote:
Thu Mar 05, 2026 7:12 am
Imgur works fine for me in Ireland.
https://help.imgur.com/hc/en-us/article ... ed-Kingdom

RBS EDIT: (no) thank you, Brexit...

solidpro
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Re: What's inside a ThinkPad 700, et. al., FDD module?

#7 Post by solidpro » Thu Mar 05, 2026 1:09 pm

branpurn wrote:
Thu Mar 05, 2026 9:10 am
solidpro wrote:
Thu Mar 05, 2026 5:00 am
I have both, but why are you trying to?

The hard drive isn't IDE in a 700C, it's an ESDI drive because the machine is MCA architecture.

btw Imgur doesn't work in the EU/UK. Blocked. Maybe use imgbb or similar?
Maybe some wackiness with a FDD ribbon extension out the front of my 755C to connect to an FDD emulator

My 755C accepts 2.5'' laptop PATA/IDE drives with the connector extracted from a dead drive

Image is essentially illustrating the FDD module in mind, and an OEM HDD, not very important
755 is IDE. 700C is not.

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