What line card? And what do you mean by extended MM? SR supports upto 300m and LRM is only 220m.
Anyway, here are the current of LRM and/or LX4
M132XP-12L (XL) has support or LRM in NXOS 5.1.
M108XP-12L (XL) has support for LRM and LX4 in NXOS 5.1.
My apologies on the lack of clarity. My question was mainly concerned with the Nexus 5K/2K. This is for most applications where standard FDDI grade fiber exists which limits SR to 26m. Thanks for any insight.
I don't believe LRM or LX4 will be supported between the N5K and N2K. For a detail roadmap, please contact your Cisco sales rep.