The Lachesis comes with a very light software package. There's no heavy background service, no game demos or desktop icons, no product tours. Just this one window, which gets the job done perfectly.
Razer uses a five profile configuration setup, which allows you to have multiple users with their own favorite settings. The main screen allows you to make the basic adjustments to each profile, including button assignment, dpi intervals, polling rate and light settings. A few more menus expand off of the sides that allow you to change the more obscure options for each profile, like scroll speed and sensitivity. You can also set up different profiles to run with the opening of different applications.
The basic list of available button assignments is rather lacking, but one might catch your eye called “Advanced Functions.” If you noticed on the previous menu screen, there was an Advanced Functions tab that had not been expanded. That screen is used to program your mouse's buttons on a whole new level. Basic commands included copying and pasting, additional commands are things like zoom in and close window, and media commands include play, pause, stop and the like. If those aren't enough, you can program macros, but this feature is very limited, only offering eight key presses. Continue as we discuss usage and conclusions.