Ultra thin hard drive cooler that mounts underneath the hard drive. Blows the heat away from the hard drive chips which is a cool idea! Features: Reduce Hard Disk Drive Temperature Extends your Hard Disk Drive life and reliability Fits 3 1/2" Hard Disk Drive (1" and 1.62" thickness) Easy InstallationFan : 2 nos Fan Size : 50X50X10mm MTBF - sleeve 25000hrs. Air flow - 10.05CFM Fan Speed - 5000 rpm Voltage - 12 V DC Connector : 4P Size : 130 x 100 x 14 mm (L x W x H) Package Content : 1 X 3.5" HDD Hard Disk Drive Cooler (Note : Photo attached is for reference only, it may be slightly varied in items of colour, shape from the actual item delivered from time to time)