subj
Hi,
http://lmgtfy.com/?q=rb4011+S-RJ01
https://wiki.mikrotik.com/wiki/MikroTik_SFP_module_compatibility_table
Greeting Tobias
The S-RJ01 is compatible with the RB4011, but will not operate at rate 1000, 100 or 10.
https://wiki.mikrotik.com/wiki/MikroTik_SFP_module_compatibility_table#S-RJ01
So.. not supported I guess?

it’s hilarious xD Probably on RB4011 autonegotiation doesn’t work at all. That’s how I’d understand that (though CRS317 autoneg doesn’t work either). Alternatively it’s just artifact left after changes. Because I remember some time ago S-RJ01 was marked as unsupported in both tables. So maybe they added support but forgot to mark it in second table.
Hi,
Dear MikroTik Team,
some of your costumers including me are a little bit confused about the documentation in the MikroTik Wiki.
For more details see: <> http://forum.mikrotik.com/t/does-an-rb4011igs-rm-support-a-s-rj01/128240/1 >
I would appreciate if you can clear this, and also could make the documentation in the Wiki more meaningful.Greeting Tobias
that is what I wrote as an email to support@mikrotik.com … if I get an answer I will post it here.
Greeting Tobias
Wiki have old info. S-RJ01 work in rb4011 with ROS 6.44 or above.
Info is from support: http://forum.mikrotik.com/t/v6-44rc-testing-is-released/127730/60
Hi,
answer from the support:
S-RJ01 is supported in RB4011 since RouterOS v6.44.
We have corrected the information in the wiki.
Greeting Tobias
Not all heroes wear capes
Thank!
Now everything is clear.