Question about Kensington Expert Mouse Trackball

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Limited response with Expert Mouse

I have an Expert Mouse 64215 V5.0 Ser No 26960309BD which I am trying to use on a Dell Dimension 2400 via the standard 9-pin serial port. [I use an Expert Mouse 64325 USB on another machine and am trying to replicate the functions for consistency - apart from scrolling, of course]. The latest version of Mouseworks (6.2) does not recognise any Kensington pointing device. However, V5.6 'sees' the 64215 (Serial port 0, IRQ 248, 4 Byte Protocol) but only responds to single button clicks - it does not respond to chording on either pair of buttons, nor can I assign 'Middle-click' within AutoCAD (my main application), though 'Drag' operates as normal for 'All other programs'. In addition, any custom settings are lost on rebooting the machine. I have tried attaching the 64215 to the PS/2 mouse port via an adapter but then the device is not even recognised. What can I do to access the full capabilities of the 64215? I have sent this query three times to Kensington via their websites - twice to '' and once to Kensington US and each time it comes back as 'Delivery failure' with the target '' It would seem that Kensington have no interest in supporting their products.

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Re: Limited response with Expert Mouse

The correct address is
or you can fill out the online form.

Many Thanks

Posted on May 20, 2008

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Will trackball model 64215 work on Windows 7?

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Where canI buy Kensington 64215

Hasn't been available for years, but I found one in a thrift store for $5 this week. Unless you're lucky like me and have a store that has heaps of old gear, you probably won't just find one by chance. But good luck anyway!

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The cursor only moves vertically on my dimension 8400

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F keys don't work on reboot. Work on Power on boot.

Turn your computer off.
Temporarily replace your keyboard/mouse with "generic" units.
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Check that the F-keys work.
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Jul 22, 2009 | Keyboards & Mice

1 Answer

I am having to click 8 or 10 times to get a response? what do i need to do?

i know this isnt going to be very helpfull but if you rate me 5 out of 5 then i will send you a free mouse and a free keyboard thay are both wireless and fully functioning made by logietek and if you want to contact me about the mouse and keyboard the email me at or ring my house number 0149 838 977 please consider it because i need this higher rate so i can be a expert please

thank you so much for if you do rate and contact me as soon as you want the mouse a keyboard

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Switching keyboard and mouse

Mice and keyboard are the two most basic input devices for the modern computer. Not much is needed to change them out.

Turn your computer off. Remove the old keyboard and mouse. Connect the new keyboard and mouse into an available usb port. Restart your computer.

You may have to wait anywhere from 30 seconds to a few minutes, depending on your computer, before the operating system recognizes the new hardware, but once it does, it will start responding.

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Is the trackball supported by the MAC operating system? If available try the same setup, using the adapter, on a windows based computer to troubleshoot whether it is the trackball or the Mac.

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