How to disable mouse acceleration?

[conor vickers]

Im on windows 8.1 and im using a razer deathadder 2013, there is some acceleration on the mouse even though on the softawre said its on 0, please help

 

[Jonas Magnusson]

Goto controlpanel and go then to mouse and disable it.
Full official guide here: http://support2.microsoft.com/kb/149228