Hello there my fellow teks. I have a pretty shameful question for you all. I have an Opt 11C and I just recieved a call with somebody asking me for what software version I have. He said some of the other switches had 2515, 2530 and 2540B and wanted to know what mine was. I said no problem I'll be abel to find it, but 5 or 6 tech manuals later I still have no clue even what load it is in let alone the 3 leter numonic to type in. If there is anybody out there who can help me it would make my day, and I would just like to remind everybody that there is no dumb question