StarTech ET90110SM302 10/100 Mbps to Single-Mode Fiber Media Converter

Overview

The StarTech ET90110SM302 bridges copper Ethernet infrastructure to single-mode fiber, extending your 10/100 Mbps network segment up to 30 km (18.6 miles) — a span that copper cable physically cannot cover. If you're connecting a remote guard shack, a distant parking structure camera node, or a campus building that sits well beyond the 100-meter copper limit, this converter gives you a clean, standards-compliant path without rearchitecting the rest of your network. The local unit presents a standard RJ-45 port on one side and an SC duplex fiber port on the other, making it straightforward to drop into an existing fiber media converter deployment alongside your current switch infrastructure.

Key Features

• 30 km single-mode reach: At 1310nm wavelength over single-mode fiber, the ET90110SM302 sustains a link across distances that would require multiple copper repeaters or a full fiber switch replacement — useful for campus perimeter cameras or inter-building links in industrial sites where fiber conduit is already in place.
• 10/100 Mbps Ethernet with 200 Mbps max transfer rate: The converter supports both 10 and 100 Mbps auto-negotiation, and the 200 Mbps aggregate ceiling means it won't become a bottleneck on a 100 Mbps full-duplex link. For IP camera streams or access control panel uplinks running well under 100 Mbps, this is headroom you won't exhaust.
• Half and full-duplex fiber operation: Supporting both half and full-duplex fiber modes gives you flexibility to match the operating mode of existing fiber infrastructure at the remote end — particularly relevant when integrating with older fiber equipment that may not run full-duplex.
• SC duplex fiber connector: SC connectors are widely deployed in enterprise and campus fiber plants. If your fiber patch panels already use SC, no adapter is needed. If you're running LC infrastructure, factor in an SC-to-LC patch cord.
• Universal 100–240V AC input: The wide-range AC input (100–240V, 0.36A) means this unit deploys anywhere from a US standard outlet to international installations without a separate transformer. Output is regulated 12V DC at 1.6A, keeping the converter's total power consumption at 19.2W.
• Steel enclosure: The all-steel housing is meaningful in utility closets, server rooms, and light industrial environments where plastic enclosures are prone to damage from rack movement or accidental impact. The 6.1 × 3.4 × 0.9 in footprint is compact enough to shelf-mount or rack-mount with a tray.
• 0°C to 60°C operating range: This covers standard indoor IT environments and many controlled industrial spaces. It is not rated for outdoor or unheated enclosures — if your remote termination point is a non-climate-controlled cabinet, verify ambient temperatures stay within this window.
• 2-year manufacturer warranty: StarTech backs the ET90110SM302 with a 2-year manufacturer warranty, which aligns with typical infrastructure hardware refresh cycles in commercial deployments.

Integration and Compatibility

The ET90110SM302 operates as a transparent Layer 1 media converter — it does not perform any Layer 2 switching, VLAN tagging, or QoS marking. This means it passes 802.1Q-tagged frames and standard Ethernet traffic without modification, making it compatible with virtually any managed network switch on either end. It integrates cleanly into surveillance networking architectures where IP cameras at a remote node connect to a local unmanaged switch, which then uplinks through this converter to a single-mode fiber run back to a core switch or NVR at the main equipment room.

For fiber media converter deployments requiring a managed chassis, this standalone unit can be substituted in applications where a dedicated chassis slot is not available or where a point-to-point single fiber run is preferred over a multi-slot chassis approach. Pair with a matching fiber media converter at the remote end — both units must use matching fiber type (single-mode) and connector style (SC duplex) for the link to establish.

One planning note: at 10/100 Mbps, this converter is not suitable for Gigabit uplinks. If your remote node is likely to add cameras or devices that push aggregate bandwidth above 100 Mbps, evaluate a Gigabit-capable single-mode converter at the outset rather than returning to replace this unit later.

Frequently Asked Questions

Q: What is the maximum fiber distance supported by the ET90110SM302?

A: The ET90110SM302 supports a maximum fiber reach of 30 km (18.6 miles) over single-mode fiber at 1310nm wavelength.

Q: What fiber connector type does the ET90110SM302 use?

A: The local unit uses an SC duplex fiber connector. If your existing fiber plant uses LC connectors, you will need an SC-to-LC patch cord to terminate the connection.

Q: Does the ET90110SM302 support Gigabit Ethernet?

A: No. The ET90110SM302 supports 10 Mbps and 100 Mbps Ethernet only. The maximum aggregate data transfer rate is 200 Mbps (full-duplex 100 Mbps in each direction). It is not suitable for Gigabit uplinks.

Q: What is the operating temperature range for the ET90110SM302?

A: The operating temperature range is 0°C to 60°C. This unit is intended for indoor, climate-controlled environments. It is not rated for outdoor or unheated enclosures.

Q: What is the warranty on the ET90110SM302?

A: StarTech provides a 2-year manufacturer warranty on the ET90110SM302.

Q: What power supply does the ET90110SM302 require?

A: The ET90110SM302 includes an AC adapter with a universal 100–240V AC input at 0.36A, outputting 12V DC at 1.6A. Total power consumption is 19.2W. No separate power supply is required.

Marty Allison

The spec that matters most on the ET90110SM302 is that 30 km single-mode reach at 1310nm — that's the reason you buy this unit rather than a cheaper multimode converter. On a real campus or industrial site, that distance eliminates the need for intermediate fiber repeaters or powered cabinets between buildings, which translates directly into fewer points of failure and lower installation cost on long runs.

Technical Highlights:

• 30 km at 1310nm SM: Single-mode fiber at this wavelength is the correct choice for runs beyond 550 meters — multimode would attenuate the signal well before 30 km. If your fiber plant is already single-mode (common in campus and municipal installs), this converter plugs straight in.
• 200 Mbps aggregate throughput: Full-duplex 100 Mbps in each direction gives you the full wire-speed capacity of a Fast Ethernet link. For IP surveillance camera nodes where aggregate camera bandwidth is well under 100 Mbps, this is not a limiting factor.
• Universal AC input (100–240V, 19.2W): The wide-range AC adapter means the unit can be deployed in international sites or in equipment rooms with mixed voltage infrastructure without sourcing a region-specific power supply.

Deployment Considerations:

• The 0°C to 60°C operating range limits this unit to temperature-controlled indoor spaces — verify your remote termination cabinet maintains this range before installing, especially in non-heated mechanical rooms during winter months.
• This is a 10/100 Mbps converter only. If your site is likely to expand the number of cameras or add bandwidth-intensive devices at the remote node, size up to a Gigabit single-mode converter now — retrofitting later means pulling the unit and replacing fiber patch connections at both ends.

The ET90110SM302 is a practical fit for connecting a remote IP camera cluster or access control panel in a building or parking structure that sits 1–30 km from the core switch room, where single-mode fiber conduit is already in place and aggregate bandwidth stays under 100 Mbps.