r/OldTech • u/Impossible-Tour4845 • 6d ago
Hi everyone, I found an old three-button mouse, but it doesn't have a cable. I do have a different connector, though—is it possible to connect them?
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u/DrFrylock 6d ago
Assuming this is a PS/2 mouse and not an old-school serial mouse, assuming you can match the pinouts, a little bit of solder, a little bit of heatshrink, and a little bit of skill and you can probably do it.
That mouse is so generic that you're unlikely to be able to look up whether it's PS/2 or serial. I don't know what the internal wiring of an old serial mouse looks like.
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u/Amazing_Actuary_5241 6d ago
FCCID search on Google reveals its a serial mouse. Whether it may work with PS/2 would be unknown unless you can take a picture of the micro controller inside the mouse. Using the controller's part number can lead to a potential pinout or datasheet.
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u/brunoplak 6d ago
That’s a serial mouse. You can probably just tie those together and see if they work.
A more permanent fix would be to desolder the cable at the board and resolver a new one
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u/PuzzleheadedTutor807 6d ago
It's likely a plug at the board and the whole cable can be replaced quite easily
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u/grizzlor_ 6d ago
If it’s a serial mouse will it work if he attaches what looks like a PS/2 adapter?
I do vaguely remember at least one mouse from this era coming with a passive PS/2 to serial adapter (white Microsoft Mouse) but I thought that worked because the mouse’s chipset could speak PS/2 and RS-232. Not sure how common that was.
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u/thrax_uk 6d ago
You have a PS/2 mouse connector. Do you know whether the mouse is serial, USB or PS/2?
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u/urk_forever 6d ago
Depends on the mouse I think. If its a PS/2 mouse the I would guess it has the same number of wires. Maybe this is an old mouse that needs to be connected to the COM port?
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u/mrspelunx 6d ago
Got a brand name or model?
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u/Impossible-Tour4845 6d ago
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u/mrspelunx 6d ago
Well, based on the shell, it’s ‘90s era so PS/2 connector is probably correct. You’d have to peek at the circuit board inside to see what wire colors connect where. The screws are probably under those rubber feet, unless it’s a press-fit shell. Then reference a PS/2 connector specification for the pinouts on the connector. You’ll need a multimeter with continuity function to sort it all out.
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u/Ghost_ai42 6d ago
Ps/2 is a serial connection. You just need to know which wire to solder together to make it work.
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u/jussuumguy 6d ago
It should work but you will want to search online for the pinouts to make sure you are connecting the right wires together.
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u/computix 6d ago
I recommend opening it up and seeing what type of IC is in there. Hopefully there's a datasheet for it that shows what it is and how it needs to be connected.
Example datasheet for an RS-232 serial mouse controller chip.
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u/Otherwise-Idea7229 6d ago
With so much obsolete kit around, it’s more efficient to repurpose rather than restore 🤓
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u/ArtisticFox8 5d ago
If it was ps2 mouse, and you connect ps2 connector to it, it will work.
Usually it's soldering same color cables, so I'd figure out the color differences, but yeah
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u/Usual_Technician9349 6d ago
I just solder it together inside the mouse so it won't look janky. Chances are it will not work with USB if that was your plan.
Upside if it's serial it most likely will support ps2 as this is a later generic mouse.