There's 2 problems to mouse speed:

The maximum speed can be set through the System preferences panel, but even when the slider is all the way to the right, the speed may be too slow... especially if you line up 3 monitors side by side.

You can get faster speeds through the Applications > Utilities > Terminal. To see the current setting, type in this:

`defaults read -g com.apple.mouse.scaling`

To make the mouse faster, set a different value, for example:

`defaults write -g com.apple.mouse.scaling 6`

Comments from long ago:

Comment from: Marcus

What’s the maximum. I have changed the value to 20 and it is still the same as before. I am using also mousezoom. Can it be that these 2 settings interfere with each other?

2010-02-04 16-09

Comment from: Kamp

Quit Terminal, reboot and BOOM! There you go.

2010-06-04 17-52

Comment from: Hip Hop Goon

Oh man thanks! I got an iMac with 24" and the mouse was sooo slow lol.

2010-06-14 15-49

Comment from: Apple News

I am facing some difficulties about the maximum could some one please explain the procedure?

2010-07-30 23-39

Comment from: 27inch mac

im running a 27inch mac and value 20 works great..

I previously gave my mouse to my girl as it was so slow and used a microsoft bluetooth mouse to get the speed,, but that one craped out so i decided to go back to the mac and was so pissed and had to find a fix.. awsome fix.. thanks

2011-10-05 06-29

Comment from: bianca

wow! thanks!!!

2011-12-29 02-53

Comment from: Ben

thanks for the post.

2012-12-12 19-17

Comment from: PreBigBanger

You’re right, 27inch mac [Visitor]…

Speed 20 really is NICE for the 27" iMac :) Thanks for the suggestion!

And thanks for this solution to the horribly intolerably slow mac magic mouse! Now, it’s great :)

2013-09-19 05-30

Comment from: bojun

terminal says that there is no command for it.

2017-03-10 03-27