BitCoin Miner Mining Cooling Fan, Size: 120x120x38mm / 4.7x4.7x1.5inch, Low dB (noise), Extremely High CFM!!! 3-Pin Connector Size: 120x120x38mm / 4.7x4.7x1.5inch, Dual Ball bearing fan! Very Long lasting. 159.14 CFM, 53 dBA, 3300 RPM Operating voltage: DV 5V to 13.8V (Needs 12V to run at max CFM) 120mm fan with Extreme High CFM fan motor 3-wire/3-pin fan, 18-inch long wires, comes with adapter pictured