| Model No. | Model Description | | IM-1LSC/3TX | Fast Ethernet interfaceAC module with 3 10/100BaseT(X) ports and 1 100BaseFX single-mode port (SC connector for 80 km transmission), 0 to 60°C operating temperature |
| IM-2GSFP | Gigabit Ethernet interface module with 2 1000BaseSFP slots (see the SFP-1G series ordering information for available Gigabit Ethernet SFP modules), 0 to 60°C operating temperature |
| IM-2GTX | Gigabit Ethernet interface module with 2 10/100/1000BaseT(X) ports, 0 to 60°C operating temperature |
| IM-2MSC/2TX | Fast Ethernet interface module with 2 10/100BaseT(X) ports and 2 100BaseFX multi-mode ports (SC connectors), 0 to 60°C operating temperature |
| IM-2MST/2TX | Fast Ethernet interface module with 2 10/100BaseT(X) ports and 2 100BaseFX multi-mode ports (ST connectors), 0 to 60°C operating temperature |
| IM-2SSC/2TX | Fast Ethernet interface module with 2 10/100BaseT(X) ports and 2 100BaseFX single-mode ports (SC connectors), 0 to 60°C operating temperature |
| IM-4MSC | Fast Ethernet interface module with 4 100BaseFX multi-mode ports (SC connectors), 0 to 60°C operating temperature |
| IM-4MST | Fast Ethernet interface module with 4 100BaseFX multi-mode ports (ST connectors), 0 to 60°C operating temperature |
| IM-4SSC | Fast Ethernet interface module with 4 100BaseFX single-mode ports (SC connectors), 0 to 60°C operating temperature |
| IM-4TX | Fast Ethernet interface module with 4 10/100BaseT(X) ports, 0 to 60°C operating temperature |
