Cisco 3000 series

IE-3000-4TC Cisco Industrial Ethernet 3000 Series 4 Ports Sw

IE-3000-8TC Cisco Industrial Ethernet 3000 Series 8 Ports Sw

IEM-3000-4PC Cisco Expansion POE/POE+ Module

IEM-3000-4SM Cisco Expansion SFP Module 4 Ports

IEM-3000-8TM= Cisco expansion module - 8 ports.