The CUE (Corsair Utility Engine) is an advanced driver tool that has advanced customisations and programming abilities. It does have a fairly extensive learning curve that takes some getting used to get the most out of it. Though the interface for just the M65 PRO RGB is fairly straight forward and easy to navigate. Starting with key assignments where you can alter each function of the 8 included buttons. The lighting tab gives control over the first 2 primary lighting zones, including breathing, static, rainbow (spectrum cycle), and colour shift effects. The final tab includes all the performance options including DPI adjustments (100 DPI increments), colour customisation (for each DPI/profile setting). There are also angle snap, lift off distance adjustments and an option to enhance pointer precision. There is also an advanced surface calibration feature, while not a unique feature it is certainly welcome as it should enable better tracking on a variety of surfaces.
The lighting effects are fairly standard and is an attractive addition to any mouse. The M65 model does feature attractive lighting design with the headlight and rear light beaming out, though as with previous findings, the front/headlight does seem a little too meagre. It is worth noting that if you have other Corsair RGB peripherals such as a STRAFE RGB or a K70 RGB or even a VOID RGB, you can sync the lighting effects together.