This AC Infinity cooling system gives you direct control of the fans speed, allowing you to manage heat for a range of situations. It includes two 120mm aluminum AC fan, four metal guards, two 2-inch screw mounting set, and one dual speed control unit. The length of the cord is 6 feet from the plug to the first fan, and an additional 4 feet between the two fans. The dual-ball bearing axial fan is specially designed to run at different speeds with minimal motor noise. Using the screw set, you can mount the fan with its two protective guards onto a wall or the side of a cabinet. Just plug it in into any standard outlet to start cooling. Speed Control Easily turn the knob to respond to different situations. When your electronics are under heavy use, you can turn it up for high performance cooling to combat the excessive heat. Then leave it at a low speed during normal operation for that gentle breeze. Can also turn the fan off. Applications This system is popular in a variety of applications including AV, DVR, media, arcade, and home theater cabinets; and smaller enclosures such as computer, stereos, and amplifiers. Note: May not be suitable for noise sensitive applications such as amplifiers and AV cabinets.