USING THE SIBERIA V2 FROST BLUE
Since the headset comes without drivers you should first head over to the official SteelSeries support page to download the latest ones along with the latest firmware update.
As usual the firmware update program is unified meaning that it's not only ment for a specific product update but for a large range of peripherals by SteelSeries.
Once you finish installing the drivers the 16 bright blue LEDs will light up on both earcups.
From the SteelSeries Engine you can adjust the audio EQ (equalizer) and set both the illumination intensity and pulsation of the LEDs.