How many switches did you have to replace?  I have two in a stack and one recognizes the NM card and the other does not when I do "show inventory" but I see all of the interfaces in the config and the ports are working fine.

I have two of these in a production environment and when I update the firmware version and reboot it reverts back to the limited bandwidth until it can phone home and reconfirm my license again.  Unfortunately with it being in a production environmen...