today i’ve installed 2 R5H and both of them have a noise like an old switching power supply but only when the link get connected (Tx), if the card is disabled or no link is made, there is no more noise. Should I be worried?
RB433, 15v/3A power, 2 cards - R5H+CM9, links are working fine.
that’s normal.. i’ve just found this http://forum.mikrotik.com/t/r5h-mini-pci-wireless-card-noisy/26661/1