i have 2011 mac book, in my mouse (wired) scroll botton left and right and down its working but top it is not working.

Now i am to hear that, and i have the same problem. And now do you solve your problem.

i have 2011 mac book, in my mouse (wired) scroll botton left and right and down its working but top it is not working.

I saw that problem a few times already with the wired mouse from Apple. It seems to be hardware-related. I'd suggest you buy a new mouse :)

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