Please note: the actual current may only be about 2.1A, which is marked as 2.7A, please understand! and the speed may be 10% loss, If you mind, please don’t buy it. Thank you! Material: Plastic Color: Black Size:12012038mm(4.724.721.49 inch) Connector: 4 Pin Speed: 6000RPM Blowing rate:210CFM Cable Length: 25cm(10inch) Fit For: For Antminer Bitmain S7 S9