I am trying to establish what model of Cisco 4948 I have. Whether it's the the standard WS-C4948, WS-C4948-S or the WS-C4948-E. The "show ver" lists the model as WS-C4948 however the unit has dual power supplies and is running the Enterprise Services image. According to this Cisco Bulletin it would be classed as the WS-C4948-E http://www.cisco.com/en/US/prod/collateral/contnetw/ps5680/ps6870/product_bulletin_c25-552113.html.
Could it be that the "show ver" doesn't differentiate between the different variants, it just list the platform as a 4948