Review on Extension Switch Female Support Strips by Bret Wong

I was hoping they could use this to turn the fan on and off on my workstation instead of turning it off when not in use. After adding the switch, it turned out that the fan wasn't spinning as fast as usual, so I pulled out a USB power tester and found that these switches were stealing almost 0.3V and 0.11 amps of current before they did reach the accessory. Doesn't sound like a ton, but if the fan normally draws 0.41 amps, that's 25% amps. For the low price, I think some resistance is expected, but I doubt if I'm willing to trade some of my cooling performance for minor convenience. If that still doesn't seem like a huge loss in performance, wattage is the actual amount of current drawn by a device, which is a multiple of voltage and current. Based on measurements in my tests; the power drops from 2 watts to 1.3 watts, which means that almost half of the power normally supplied to the fan is consumed by these switches. The resistance is higher when the switch is added and I assume cheap low conductivity materials were used for the internals and wiring. . I will also test the other switch that comes with this kit to see if there is any consistency. If they don't at least match the power dissipation, I suspect the build quality is even worse than it currently should be and will likely be returning the switches.