The Cisco Catalyst IEM-3500-16T Expansion Module adds high-density non-PoE Gigabit access to IE3500 base switches for industrial and harsh environments. Providing 16 Gigabit RJ45 downlinks, it delivers reliable line-rate performance in a rugged, fanless IP30 DIN-rail form factor. The module is powered by the host switch (11 W module consumption) and inherits IOS XE features, licensing, and management for seamless, unified operation—ideal for scaling device connectivity where endpoints are
| Ports | 16 × 10/100/1000 Mbps RJ45 downlinks (non-PoE). |
| Switching Capacity | — |
| PoE Budget | No PoE. |
| Forwarding Rate | Line-rate on all ports (all packet sizes). |
| 16 × Gigabit Ethernet Downlinks (Non-PoE) | Cost-efficient port expansion for sensors, controllers, and gateways that don’t require inline power. |
| Ruggedized, Fanless Design (IP30) | Built for space-constrained industrial sites with DIN-rail mounting. |
| Model Number | IEM-3500-16T |
| 16 × Gigabit Ethernet Downlinks (Non-PoE) | Cost-efficient port expansion for sensors, controllers, and gateways that don’t require inline power. |
| 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). |
| Scalable Architecture | Helps expand total system ports up to 27 with compatible IE3500 bases. |
| Recommended for | Port-density expansion on Cisco IE3500 deployments in industrial/harsh environments. |
| Ports | 16 × 10/100/1000 Mbps RJ45 downlinks (non-PoE). |
| PoE Budget | No PoE. |
| Switching Capacity | — |
Yes, the Cisco Catalyst IEM-3500-16T Expansion Module is currently in stock and available for immediate shipment from our Boulder, CO warehouse. Same-day shipping on orders placed before 2pm MT.
This IEM-3500-16T is professionally refurbished or new-surplus enterprise hardware. Every unit is fully tested, factory-reset, and inspected before shipping. Cosmetic blemishes (rack marks, minor scuffs) may be present but never affect functionality.
The IEM-3500-16T comes with the Eldo Systems Lifetime Warranty covering hardware defects. We are an independent reseller — manufacturer warranties do not apply, but our lifetime coverage matches or exceeds typical OEM terms.
Free ground shipping on every order, included in the price. Orders ship same-day if placed before 2pm MT (Mon–Fri). Expedited overnight and 2-day options are available at checkout for urgent deployments.
Yes — we ship worldwide. International orders are quoted individually so we can present accurate freight, duties, and lead time. Use the Request a Quote form or call (484) 630-1533 to start.
Absolutely. We offer volume discounts and project pricing for resellers, integrators, and end-users buying in quantity. Submit a quote with your target quantity and our team will respond within 15 minutes during business hours.
Get the IEM-3500-16T from Eldo Systems with lifetime warranty and free ground shipping.
Independent Reseller Notice: Eldo Systems is an independent reseller of refurbished and new-surplus enterprise networking equipment. We are not affiliated with, authorized by, or endorsed by Cisco, Juniper, Arista, HPE, Dell, Meraki, Fortinet, Mellanox, NVIDIA, Finisar, or any other manufacturer listed on this site. All product names, logos, and brands are property of their respective owners. All products sold are refurbished or new-surplus unless otherwise noted. Manufacturer warranties do not apply; all items are covered by the Eldo Systems Lifetime Warranty.
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