IEM-3300-16T - Cisco IE3300 Rugged 16 Port GE Copper Expansion Module

Cisco IEM-3300-16T — IE3300 Rugged 16-Port Gigabit Ethernet Copper Expansion Module

What it is

IEM-3300-16T is a Cisco Industrial Ethernet 3300 Series rugged expansion module that adds 16 × Gigabit Ethernet (GE) copper ports (RJ-45) to a compatible Cisco IE-3300 chassis.
It provides expanded copper connectivity in a hardened industrial form factor — ideal for industrial and outdoor Ethernet environments where lots of GE copper ports are needed at the edge.

Why buyers pick IEM-3300-16T (plain English)

High-density copper access
Brings 16 additional GE copper ports to the platform, perfect for aggregating local devices like PLCs, HMIs, IP cameras, sensors, and general industrial endpoints.

Industrial rugged design
Built for extreme conditions — extended temperatures, shock/vibration, dust, and electrical interference typical of manufacturing floors, utilities, and transportation networks.

Seamless Cisco IOS integration
Configured and managed using Cisco IOS CLI, SNMP, and management tools for familiar workflows, consistent policy, and automation across industrial and enterprise deployments.

Flexible field expansion
Modular design lets you add port capacity without replacing the entire switch, making it easy to grow or adapt deployments in the field.

Robust edge platform
Pairs with the IE-3300 chassis to form a complete, resilient edge switch with both uplink and expanded access plane capabilities.

60-second spec box (IEM-3300-16T)

Module type
Industrial GE copper expansion module

Ports added
16 × 10/100/1000BASE-T (RJ-45)

Speed support
1 GbE

PoE support
Dependent on base chassis and power configuration

Form factor
Cisco IE3300 rugged expansion module

Managed by
Cisco IOS CLI / SNMP / NETCONF

Use case
High-density copper access at industrial edge

Where it fits (and when to choose something else)

Perfect for:

• Industrial access layers needing many GE copper ports

• Harsh environments (wide temp, vibration, electrical noise)

• Local device aggregation at the edge

• Networks standardizing on rugged Cisco switches

Choose something else if:

• You need fiber uplinks or extended reach → SFP fiber modules (e.g., IEM-3300-8S)

• You need PoE/PoE+ powered ports → PoE modules (e.g., IEM-3300-8P)

• You need higher speeds (multigig/10G) → higher-speed industrial modules (if supported)

TL;DR

IEM-3300-16T is Cisco’s rugged 16-port GE copper expansion module for the IE3300 Series:
a high-density industrial copper port expansion option that delivers reliable Gigabit connectivity in harsh environments where lots of local access ports are required.