Thanks chrisel,
but I think you're incorrect...
From what I read on the cisco site, the 4500-M can have up to 32MB main memory and the 4500 can have up to 16MB, so I've been able to find any 4500's with 32MB and assume that they're 4500-M's.
Here's one of them:- cisco 4500 (R4K) processor (revision 0x00) with 32768K/4096K bytes of memory.
As you can see, revision 0x00 is a 4500-M.
We also have revisions B, D and E and all of these seem to have only 16MB RAM. All of the 0x00 revisions have 32MB RAM, but as I said earlier I'm still unsure of those routers with 16MB RAM - 4500 or 4500-M?
Thanks,
yoggit