http://www.techarp.com/review/Razer/Diamondback/razer_config_01.jpg Mouse sensitivity is an internal filter of the driver. The maximum sensitivity setting of 10 is unfiltered. Each incremental stop or setting is a 10% decrease, e.g. 1 setting will decrease mouse pointer input to 10% (i.e. a linear graph). I dont understand this. If i have DPI 1600 and set to 8 in the Driver what dpi i use now? Here is the user guide: http://dl.razerzone.com/master-guides/DB/DBOMG-ENG.pdf Pls Mod don't delete again. The Support can not help me.