My office has a SupIII (WS-X4014) that we're trying to install in a 4507R. However, we are finding conflitcting info from Cisco about their compatibility.
The 4500 Data Sheet doesn't list the SupIII as a compatible Sup Engine : http://www.cisco.com/en/US/products/hw/switches/ps4324/products_data_sheet0900aecd801792b1.html
But the Installation Guide for the 4500 says that it does (page 1-19 and 1-12): http://cisco.com/en/US/docs/switches/lan/catalyst4500/hardware/installation/guide/78-14409-08/4500inst.html
Any help or clarification is appreciated!