Extend Hard Disk Drive life and reliable. Protect your valuable data by keeping your hard disk cool. Anti-Dust and easy, Simple installation. Hard Disk Drive cool down and smooth operation guaranteed. Reduce Hard Disk Drive Temperature. Fit 3.5" Hard Disk Drive. (1" and 1.62" thickness) Fan: 2 pcs Sleeve Bearing 2 ×2 ×0.4 inches. (50 ×50 ×10mm) Air flow: 2  × 9.0 CFM. Fan Speed: 4,800 RPM. Power: 4.32W. Current: 0.1A. Noise: 29dBA noise level. Voltage: DC 12V. MTBF: 40,000 hours. Connector: 1 x 4 Pin male connector. Color: blue.