MS-02 Ultra PSU Fan noise
For those who dont like PSU fan noise - it is pretty straightforward replaceable by Noctua NF-A4x10 FLX, it even have 2pin adapter included.
BUT you need to swap pins on 2pin noctua adapter!! psu fan have reversed polarity.
With this 15€ mod, device become absolutely silent.
ps: to remove psu, you need to remove motherboard, to access L shaped bracket holding psu. but afterwards you can attach psu without it, stays in place good enough.