There are two Cisco switches that are nearly identical. Both are 24 port Gig PoE. Only difference is the software that came preinstalled. WS-C3560G-24PS-S - IP Base (IPB) WS-C3560G-24PS-E - IP Services (IPS) Can the 24PS-S run IP Services in a lab environment, or are they feature locked based on model? Thanks in advance!