You can use an LRM transceiver with OM2 fiber as long as you have mode conditioning patch cables. However you'd be better off using regular SR transceivers which don't require special patch cables. Note the distance limitation on OM2 fiber at 10Gb as @PhilipDAth brought up.    You'll want to plan on replacing the OM2 fiber with OM3 or OM4 soon.  ... View more