Akasa ak 178 cold cathode lights 310mm akasa ak 178 bl this blue cold cathode light 310mm from akasa offers a fantastic way of bringing your pc components into the light easy to install the ak 178 rd radiates light into dark pc housing in no time at all thanks to the accompanying inverter equipped with a 4mm low power tube only 3w and housed inside clear acrylic tubes for protection akasa ak 178 bl cold cathode light blue 310mm