Yes. There is also an adapter that would allow me to use a SFP+ in a QSFP+ port. But I’m trying to work out if I can make an easily interoperable system where a wall jack fed from a 40G switch can act as a both a 10G or 40G port as needed. Hence the question.
QSFP+ to SFP+: MTP/MPO-LC Breakout Cable
This is almost the setup I’m looking for. Except example is using MMF. I want to know is this setup can be done to one SFP over SMF.