IEM-3400-8T – 8xGE Copper Ports – IE3400 Expansion Module – Non-PoE

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IEM-3400-8T Description

IEM-3400-8T is a Cisco Catalyst IE3400 Rugged Series advanced expansion module for adding eight Gigabit Ethernet copper ports to supported IE3400 industrial switch base systems. It is used when an IE-3400-8T2S or IE-3400-8P2S base switch needs additional non-PoE copper connectivity at the industrial edge, with Cisco documentation identifying the module as an 8-port GE copper expansion module, non-PoE, with advanced hardware features, one expansion-module position per base system, 12 W module power consumption, and an 18-port total system profile when attached to the compatible base switch.

Quick Specs

Parameter

Specification

SKU

IEM-3400-8T

Cisco ordering PID

IEM-3400-8T=

Product type

Expansion module

Compatible base switch

Cisco IE-3400-8T2S or IE-3400-8P2S

Expansion module count

One module attached to a base system

Added port count

8 ports

Port media

Gigabit Ethernet copper

PoE/PoE+ support

No

90-W PoE support

No

Advanced hardware features

Yes

Total system ports with module

18 ports

Module power consumption

12 W

Application Scenarios

Copper endpoint expansion in IE3400 cabinets

IEM-3400-8T fits DIN-rail IE3400 sites where the base switch already matches the design and the added eight ports need to remain RJ-45 copper data interfaces.

Non-PoE branch from the IE3400 module family

Select the 8T module when the BOM needs copper connectivity without endpoint power. IEM-3400-8P is the related copper PoE/PoE+ option, and IEM-3400-8S moves the added ports to SFP media.

Controlled module installation work

The module line should be staged for a planned shutdown because Cisco documents one expansion module per base system and states that expansion modules are not hot-swappable.

Product Comparison

Parameter

IEM-3400-8T

IEM-3400-8S

IEM-3400-8P

IEM-3300-8T

Product type

Expansion module

Expansion module

Expansion module

Expansion module

Cisco ordering PID

IEM-3400-8T=

IEM-3400-8S=

IEM-3400-8P=

IEM-3300-8T=

Compatible base switch

IE-3400-8T2S or IE-3400-8P2S

IE-3400-8T2S or IE-3400-8P2S

IE-3400-8P2S

IE-3300-8T2C, IE-3300-8P2S, IE-3300-8T2X, IE-3300-8U2X, IE-3400-8T2S, or IE-3400-8P2S

Total system ports with module

18 ports

18 ports

18 ports

18 ports

Expansion port count

8 ports

8 ports

8 ports

8 ports

Port media

Gigabit Ethernet copper

Gigabit Ethernet SFP

Gigabit Ethernet copper

Gigabit Ethernet copper

PoE/PoE+ support

No

No

Yes

No

90-W PoE support

No

No

No

No

Advanced hardware features

Yes

Yes

Yes

No

Module power consumption

12 W

27 W

20 W

6 W

  • In an IEM-3400-8T vs IEM-3400-8S comparison, both are IE3400 eight-port expansion modules, but the table difference is media: IEM-3400-8T adds copper ports and IEM-3400-8S adds SFP ports.
  • The IEM-3400-8T vs IEM-3400-8P difference is PoE/PoE+ support and base-switch scope; IEM-3400-8T is non-PoE copper for IE-3400-8T2S or IE-3400-8P2S, while IEM-3400-8P is PoE copper for IE-3400-8P2S.
  • For an IEM-3400-8T vs IEM-3300-8T comparison, both provide eight copper Gigabit ports, but Cisco marks advanced hardware features as Yes on the IE3400 module and No on the IE3300 module.
  • Buyers deciding which model to choose should compare the base switch, media type, PoE requirement, and advanced-hardware row before adding the expansion module to the order.

Selection Guide

1. Choose IEM-3400-8T for non-PoE copper expansion

Match this SKU to an IE3400 BOM that needs eight added Gigabit Ethernet copper ports without PoE or PoE+ endpoint power.

2. Move to IEM-3400-8S for fiber media

Select IEM-3400-8S instead when the expansion slot must provide SFP interfaces rather than copper RJ-45 connections.

3. Keep IEM-3400-8P for powered copper endpoints

Order IEM-3400-8P only when the IE-3400-8P2S base switch and the endpoint plan require PoE/PoE+ copper expansion.

4. Verify the service-window constraint

Confirm the single-module limit and powered-down installation plan before the module is staged for a cabinet refresh or spare replacement.

Ordering Checklist

Check item

What to confirm

Why it matters

Exact order line

Page SKU IEM-3400-8T and Cisco ordering PID IEM-3400-8T=

Keeps the IE3400 copper module separate from SFP and PoE expansion lines

Base switch

Cisco IE-3400-8T2S or IE-3400-8P2S

Cisco lists these IE3400 base systems for the 8T expansion module

Port role

Eight added Gigabit Ethernet copper ports

Prevents a media mismatch with IEM-3400-8S

PoE boundary

No PoE/PoE+ and no 90-W PoE on this module

Prevents using a data-only copper module for powered endpoints

Advanced hardware row

Advanced hardware features marked Yes for the IE3400 module

Separates this line from the IE3300 8T module when the feature set matters

Installation state

Switch powered down before attaching or removing the module

Cisco warns against attaching an expansion module while the switch is energized

Specifications

Parameter Specification Parameter Specification
SKU IEM-3400-8T Cisco ordering PID IEM-3400-8T=
Product type Expansion module Compatible base switch IE-3400-8T2S or IE-3400-8P2S
Total system ports with module 18 ports Expansion module count One module attached to a base system
Expansion port count 8 ports Port media Gigabit Ethernet copper
PoE/PoE+ support No 90-W PoE support No
Advanced hardware features Yes Module power consumption 12 W
Dimensions 6 x 2.6 x 5.3 in. (15.2 x 6.6 x 13.5 cm) Weight 2.0 lb (0.9 kg)
Mounting DIN rail Hot-swap support Not hot-swappable
Primary comparison SKUs IEM-3400-8S, IEM-3400-8P, IEM-3300-8T    

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Need pricing, stock, or shipping details for the IEM-3400-8T ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.

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    Everything fit and worked the first time. That’s what we like to see.

Questions & Answers

  • What does IEM-3400-8T add?

    IEM-3400-8T adds eight copper Ethernet ports to a compatible Catalyst IE3400 rugged switch expansion system for industrial cabinets.
  • How is IEM-3400-8T different from IE3300 expansion modules?

    IEM-3400-8T belongs to the IE3400 expansion ecosystem, while IEM-3300 modules are tied to Catalyst IE3300 bases, with eight copper IE3400 expansion planning.
  • Does IEM-3400-8T provide PoE?

    IEM-3400-8T is a data copper expansion module, so PoE endpoint designs need a PoE-capable IE3400 option and power budget.
  • Which endpoints fit IEM-3400-8T?

    IEM-3400-8T fits externally powered industrial controllers, HMIs, scanners, or local Ethernet devices that need rugged copper access, with eight copper IE3400 expansion planning.
  • What compatibility check matters for IEM-3400-8T?

    IEM-3400-8T needs a supported IE3400 base, software level, power design, and expansion slot match before installation, with eight copper IE3400 expansion planning.
  • Why would IEM-3400-8T be wrong for fiber?

    IEM-3400-8T is copper-focused, so fiber uplinks or noise-isolated plant connections need SFP-capable industrial expansion, with eight copper IE3400 expansion planning.
  • What cabinet planning applies to IEM-3400-8T?

    IEM-3400-8T cabinet planning covers DIN rail space, temperature, grounding, cable bend radius, and service access around copper ports.
  • What commissioning check applies to IEM-3400-8T?

    Commissioning IEM-3400-8T verifies module recognition, copper link state, interface numbering, alarms, and software support before handoff, with eight copper IE3400 expansion planning.

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  • IEM-3400-8T Datasheet