No mechanical ball to get dusty, dirty or stolen. Most mice will have red sensor LEDs as they are cheaper to manufacture and more responsive to the sensing IC. The colour is actually very subtle, but the metallic black really has an edge with the glitter in the injection plastic. These mice are no longer manufactured as previously mentioned to be fair, 9 years is a rather long manufacturing period for a computer peripheral. You will have to give it some time before you eventually get used to it.

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When you’re replacing the ScrollPoint LED, ensure the replacement has sufficiently long leads to go inside the spacer. The slate blue mice are presumably less common and were only manufactured with IBM logos because this colour was dropped with the later models. From what I can gather the slate blue ScrollPoints came out first and the metallic black ones came out after with some changes.

IBM ScrollPoint (31P) Mouse | eBay

These ScrollPoint mice are the most common, and in my opinion the nicest for overall features– they are also very easy to work on and modify. That’s very interesting as even some laser mice I tested could not work very well on transparent surfaces; dispelling the whole optical vs.

The changes were a more semi-circled shaped body, a better ScrollPoint cap and a third button right above the ScrollPoint. Despite IBM’s original Almaden page proclaiming “After a few days with the ScrollPoint, you’ll find you can’t go back” most people still prefer wheels.

Another difference is that the bottom covers are different between the two as well: Lenovo only manufactures the standard black issue ones. First and foremost, it’s interesting the earlier IBM mouse lacked a detachable USB cable– and all of the sudden in the later models they implement this which is helpful when you have to disassemble these mice en-masse.


Many used ScrollPoints will have little to no wear as they are generally not used in service extensively from users ultimately swapping them out for a wheel-based mouse; at least, this was common for a time when IBM bundled ScrollPoints with all of their computers such as IntelliStations opfical ended after a period due to customer disastisfaction.

Finding ScrollPoints in new condition is more uncommon, but not impossible. Some minor changes need to be done, opticap the tabs on the optical base or the older silver top need to be cut.

IBM ScrollPoint (31P7405) Mouse

The mouse naturally fits the curvature of your hand so your palm and fingers can rest comfortably without any problems. After this you will need an X-ACTO knife to cut away optcial excess, if you do not the buttons won’t align properly disallowing them to click.

I’m not exactly sure what makes them slower since they’re both DPI according to IBMhowever I presume this is either the optical sensor or the microcontroller. The second and final version of the standard three-button ScrollPoint mice were announced in Make sure there is no excess glue to make the buttons taller in height than they were originally: You have to use a fine pair of pliers to snip the excess plastic out, shown here:.

As ScrollPoints offer superior functionality to the standard ‘wheel’ mechanism, it’s very curious optial this alternative design never overtook standard mice. It is all thanks to this ergonomic design that you will never find your hand strained on using the Scrollpoing Scroll Point pro Mouse.

Optical technology provides precision control and has no mechanical ball, thus there is no need for a mouse pad. Show More Show Less. Fixing the divot on the button plastic After in extensive use the microswitch will cut the plastic of either left or optcal clickable buttons and the thumb button if you use that frequently.


Here is the good and the bad of this mouse. Flashing the controller will require desoldering the Cyprus microcontroller and adding a socket; relatively easy if you have soldering equipment. Green probably ibbm the worst as it changes the cap to look an almost grey-like colour.

IBM ScrollPoint Pro (31P8700) Mouse

For an anatomy analysis we’ll use the standard ScrollPoint III the general design is the same across all models–however the ScrollPoint I may be different. Ivm a photo comparing both slate blue colours and a metallic black: Install the latest Lenovo driver which I think makes Chrome see it as a standard wheeled device– since that’s all it has been programmed to see. The antique sage ones are prized optucal their unique look, however.

The ScrollPoint mechanism is mounted on the same PCB as the buttons and is slid on two three-pin standoffs standard pitch between the pins. If your ScrollPoint isn’t new and has a damaged rubber coating, just scrolopoint a magic eraser and gently remove the rubber or let the plastic soak in water and soap for a few hours and rub it off with a coarse cloth. Regardless, it does have a following of few who like the ergonomy and enhanced scrolling ability. Once I determine the cause of the increased sensitivty of the revision B ScrollPoints Mousf will report back here.

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