We have trying a WDM Cisco GLC BX U SFP module with a RB260GS .
I the SFP status the switch is recognized the model, but the link or data transfer is not working!
Sure, this model doesn’t appear in the http://wiki.mikrotik.com/wiki/Supported_Hardware#SFP_modules
but all other brands ex. Zyxel switches working well with this model of SFP.
Dear Mikrotik, do you want to sell the Mikrotik routers/switches or not?