Feature: 1. [Function] Suitable for desktop computer chassis, the fan hub can be installed in the PCI card slot at the back of the chassis. The rotation speed of the chassis fan is adjusted through the knob. 2. [Multi Channels Interface Design] You can connect multiple fans, you can use a 3pin or 4pin motherboard, and the power interface has a large 4p interface and a SATA interface for easy selection. 3. [Excellent Performance] The accuracy adjustable resistance has high accuracy, excellent performance, and the speed can be adjusted at will, and the maximum voltage can be adjusted to 12v. 4. [Low Loss] This speed governor adopts high quality PCB and metal materials, with low loss, low heat generation, with protection chip and it also has a long service life. 5. [Simple Operation] With simple operation, just plug and play, the speed governor can completely turn off the fan, freely adjust the voltage to control the fan speed. Specification: Item Type: Fan Hub Material: PCB, Metal Size: Approx. 120 x 66 x 20cm / 47.2 x 26.0 x 7.9in(The Size is Measured Manually, There May Be Small Deviation) Rated Power: 72W FanInterface: 8 3PIN/4PIN Single Fan Current: ≤0.6A, Don't Use Overloaded. Package List: 1 X Fan Hub 1 X Screw