Invero? USB Crystal Blue Light 3 Cooling Cooler Fans ideal for Laptops, Notebooks, Xbox 360, Playstation 3, DVD / Blu-Ray Players - Simple Plug & Play via USB Supplied (No Power Adaptor Required) No power adapter necessary. Conveniently powered through USB Port 3x Powerfull Cooling Fans with Blue LED. Simple plug and play device so no installation required Ideal for Laptops, Notebooks, Consoles or Players Dimensions: 310mm x 265mm x 50mm (LxWxH)