A while ago, I replaced all my case fans with 5 of the same model of be quiet! PWM fans, which are all connected to a DeepCool PWM fan hub, and controlled by software. They all couldn't reach the hub, and I was in a pinch and didn't have plain old 4-pin extenders, so I used a couple 4-pin splitters. At first, I tried actually using just one as intended, but all the splitter fans ran at full speed while the others didn't (only one of the three ends had a 4th pin; I assumed that fan would act as the 'master' to the other two). Instead, I used two splitters, one for each of the two fans that couldn't reach, and made sure to connect them to the ends with the 4th pin. This worked perfectly.
Fast forward to now, just after a 600 mile move. Upon starting up the machine, the two fans connected by one splitter each are at full speed again. The non-splitter fans are behaving normally. Could something have broken during the drive (we didn't hit any potholes or anything, and have done this drive before, but who knows)? Since the other fans are normal, I feel like the hub is fine, but I can't imagine a cable like this breaking, but just so that the 4th pin doesn't work, and have that happen to both splitters independently.
Fast forward to now, just after a 600 mile move. Upon starting up the machine, the two fans connected by one splitter each are at full speed again. The non-splitter fans are behaving normally. Could something have broken during the drive (we didn't hit any potholes or anything, and have done this drive before, but who knows)? Since the other fans are normal, I feel like the hub is fine, but I can't imagine a cable like this breaking, but just so that the 4th pin doesn't work, and have that happen to both splitters independently.