StarTech.com StarTech.com 80x25mm Dual Ball Bearing Computer Case Fan w/ LP4 Connector - System fan kit - 80 mm. Operating relative humidity range: 10 - 80 %. Colour of product: Black. Weight: 75 g. Package weight: 0.12 kg. Dimensions (WxDxH): 80 x 80 x 25 mm, Power requirements: 12V, Rotational speed: 3000 RPM