Sunon 80x80x38 PMD1208PMB1-A Dual Ball Bearing Case Fan Mfr: Sunon. Mfr part number: PMD1208PMB1-A. Dimension: 80x80x38 mm. Speed: 5700 rpm. Air Flow: 84.1 CFM. Noise Level: 55.2 dBA. Come with regular 4-pin power connector and one 3-pin speed sensor. It uses 4-pin power connector for 12V power.