Thanks for the info, what CPU and memory are you running?I don't have a SM SQ series to compare it to. I just received cpu/memory to power mine on yesterday and after the BIOS and BMC were updated, I was able to use the PWM offset setting under utilities in the BMC to slow the fans. Currently most fans are running either 2k or 3k rpms.
The BMC spins up the fans on CPU demand fairly quickly, but at idle it is a bit louder than a desktop machine. Much easier to deal with than the 2U quanta machine that I had to do a fan swap on.
On another note, one of my DDR4 memory sticks were faulty and caused the server not to post and stopped at B7 on the chipset initialization screen with no other error message. Once I had that under control and updated the BIOS the server actually specifies the stick and location that failed.