Switch shell - H3C 8-port full 10 Gigabit switch SKS8300-8T fan replacement top cover

H3C 8-port full 10 Gigabit switch SKS8300-8T fan replacement top cover, the original 4010 turbo fan is too noisy. Remove the top cover, print a new top cover according to the size, draw the installation position according to the 120 chassis fan, find a fan protection cover at random, the effect is very good, basically no sound can be heard, the temperature is 10 degrees lower than the original fan. The PWM power supply line sequence of the machine fan is different from that of the chassis PWM, and the plug size is also different. The machine is a 2.54 plug, using two DuPont wires instead, and it was found that speed regulation is not required. A 120 fan below 1500 rpm is enough quiet at full speed, and the temperature is low enough. Finally, two wires were used, 12V white wire and GND black wire. 10 Gigabit intranet, from now on, it is quiet and peaceful. Because the machine is made of iron, there may be errors in details, and the length of the original screws is not enough. I am too lazy to change the screws. Use zip ties to fix it, which is very firm.