[shortdesc]

• Expansion module, Managed (inherits L2/L3), 8 × 10/100/1000, IP30 rugged, fanless, DIN-rail, powered by base switch

[/shortdesc]

[properties]

Property	Details
Product Line	Cisco Catalyst IE3500 Expansion Module
Use Case	Port expansion for IE3500 series (industrial/harsh environments)
Management	Managed (Cisco IOS XE WebUI/CLI; optional Cisco Catalyst Center)
PoE Support	No PoE
Layer Support	Inherits Layer 2 & Layer 3 from base switch
Scalability	Expands total system ports up to 19 (with compatible base)
Operating System	Inherits Cisco IOS XE from base switch
Software Licence	Inherits from base switch
Form Factor	Ruggedized, fanless, DIN-rail module (IP30)
Default Power Supply	Powered by base switch

[/properties]

[specifications]

Specification	Details
Model Number	IEM-3500-8T
Port Count	8 (8 × 10/100/1000)
Downlink Ports & Speeds	8 × 10/100/1000 Mbps RJ45
Uplink Ports & Speeds	—
PoE Power Budget	No PoE
Switching Capacity	—
Forwarding Rate	Line-rate on all ports (all packet sizes)
Stacking Bandwidth	—
DRAM	8 GB
Flash Memory	5.1 GB
MAC Address Table Size	24,000 entries
VLAN Support	4096 VLAN IDs (up to 1024 active)
Power Requirements	Powered by base switch; module power consumption 6 W
Dimensions (H × W × D)	6.00 × 2.51 × 5.29 in (15.24 × 6.38 × 13.44 cm)
Weight	1.95 lb (0.88 kg)
MTBF	3,012,621 hours

[/specifications]

[accesories]

Cabling & connectors

Item	Details
Cat5e/Cat6/Cat6A RJ-45 patch cable	Data cable for 8× copper downlink ports (1G)

[/accesories]

Cisco Catalyst IEM-3500-8T Expansion Module

The Cisco Catalyst IEM-3500-8T Expansion Module adds non-PoE Gigabit port density to IE3500 base switches for industrial and harsh environments. Providing 8 × 10/100/1000 RJ45 downlinks, it delivers reliable line-rate performance in a rugged, fanless IP30 DIN-rail form factor. Powered by the host switch (6 W module consumption), it inherits IOS XE features, licensing, and management for seamless integration—ideal where endpoints are externally powered and fiber is not required.

Key Features:

• 8 × Gigabit Ethernet Downlinks (Non-PoE): Cost-efficient copper expansion for sensors, controllers, and gateways.
• Ruggedized, Fanless Design (IP30): Built for space-constrained industrial sites with DIN-rail mounting.
• Seamless System Integration: Inherits Cisco IOS XE features and licensing from the base IE3500 switch.
• Simple Operations: Managed (Cisco IOS XE WebUI/CLI; optional Cisco Catalyst Center).
• Right-Sized Expansion: Helps scale total system ports up to 19 with compatible IE3500 bases.

Technical Overview:

• Recommended for: Non-PoE port-density expansion on Cisco IE3500 deployments in industrial/harsh environments.
• Ports: 8 × 10/100/1000 Mbps RJ45 downlinks.
• PoE Budget: No PoE.
• Switching Capacity: —
• Forwarding Rate: Line-rate on all ports (all packet sizes).
• Management: Managed (Cisco IOS XE WebUI/CLI; optional Cisco Catalyst Center).
• Security: Inherits features and license tier from the base IE3500 switch.
• Energy Efficiency: Fanless operation; powered by base switch (module consumption 6 W).

You can check the related tab for the IEM-3500-8T datasheet.