Comnet Unmanaged Switch 4PORT 100MBPS 2 Fiber 2 Copper SFP Sold Sepertly - CNFE4FX2TX2US

Comnet CNFE4FX2TX2US 4-Port Unmanaged Switch with Fiber and Copper Ports

Overview

The Comnet CNFE4FX2TX2US is a 4-port unmanaged Ethernet switch designed for surveillance and industrial networking applications where you need to mix fiber and copper connectivity in a compact form factor. This switch combines 2 SFP fiber ports and 2 RJ-45 copper ports, all operating at 100Mbps, making it useful for extending camera networks across distances where fiber isolation or long-run cabling is required without introducing managed-switch complexity.

Unmanaged architecture means zero configuration overhead — plug in your SFP modules, connect your copper lines, and the switch passes traffic immediately. This is ideal for straightforward point-to-point or star topologies in surveillance systems where you're not managing VLANs, QoS, or redundancy at the switch level. The CNFE4FX2TX2US requires a minimum power supply rated at PS-A12060 (12VDC, 0.6A baseline), keeping power budgets reasonable on distributed rack or field installations.

Key Features

• Hybrid Port Configuration (2 SFP + 2 RJ-45): Fiber ports let you run long distances or through electrically noisy environments (motor control, high-voltage utility equipment) without ground-loop hum or EMI corruption, while copper ports stay local for short camera-to-switch drops. This flexibility means you don't need to commit to all-fiber infrastructure if your layout is mixed.
• 100Mbps per Port: Suitable for standard-definition and HD surveillance cameras operating at 1080p or lower bitrates. Each 100Mbps port can handle multiple compressed video streams if your cameras are not pushing full bandwidth (many modern surveillance cameras are tuned to 2–5 Mbps). For higher-resolution or uncompressed demands, plan for managed gigabit switches instead.
• Unmanaged Operation: No startup configuration, no CLI, no firmware updates required for basic bridging. All four ports self-negotiate automatically. Reduces administrative overhead in distributed installations where you can't easily SSH to every device.
• SFP Module Interchangeability: The two fiber ports accept standard SFP modules sold separately, allowing you to choose multimode, single-mode, or specialized optics matched to your distance and environmental requirements. This modularity is critical in surveillance deployments where fiber runs vary widely.
• Compact Industrial Form Factor: Designed for DIN-rail or wall mounting in outdoor enclosures, junction boxes, and pole-mounted cabinets common in surveillance and utility deployments. Small footprint reduces enclosure real estate pressure in remote camera sites.
• Low Power Draw: Minimum PSU of PS-A12060 (12VDC, 0.6A) keeps power costs down and allows battery or solar-backed operation in off-grid surveillance sites. No PoE injection capability (this is a pass-through switch only), so your cameras or PoE injectors supply their own power upstream.

Integration and Compatibility

The CNFE4FX2TX2US is a passive network component — it bridges any ONVIF-compliant camera, NVR, or IP device without protocol restrictions. Because it is unmanaged, it does not support VLAN tagging, link aggregation, or managed redundancy. In enterprise surveillance systems using Milestone XProtect, Axis Camera Station, or other VMS platforms, this switch simply extends layer-2 connectivity; the VMS sees all connected devices as if they were on a flat network.

For fiber extensions, you must supply SFP optics separately. Common choices for surveillance are multimode SFP (LC or SC connector) for runs under 2 km, and single-mode for longer distances. Verify that your chosen SFP wavelength matches the switch's expected input (typically 850nm for multimode, 1310nm or 1550nm for single-mode). Comnet's related product compatibility documentation lists supported SFP models.

Copper ports are standard 10/100 auto-negotiating RJ-45. Use Cat5e or better cabling for 100Mbps; Cat6 is preferred for future-proofing and noise immunity in electrically dense environments.

When this is the correct choice

Deploy the CNFE4FX2TX2US when your surveillance network spans multiple buildings or outdoor runs where you need fiber for EMI isolation, distance extension, or ground-loop avoidance. Typical scenarios: rooftop-to-data-center camera links, pole-mounted PTZ units fed over multimode fiber to a nearby switch cabinet, or utility substation deployments where AC power and RF noise would corrupt copper signals.

When to choose a different model

If you require gigabit speeds, higher port density, or managed features (VLAN, redundancy, SNMP monitoring), look to Comnet's managed L2+ hardened switches — the CNGE11FX3TX8MS (8 RJ45 + 2 SFP with PoE injection) is a step up for larger installations. If your topology is all-copper and short-distance, a standard unmanaged gigabit switch is simpler and cheaper. If you need PoE delivery, pair this switch with external PoE injectors upstream or downstream, or upgrade to a managed PoE-capable model.

Frequently Asked Questions

Q: Does the CNFE4FX2TX2US support VLAN tagging or QoS?

A: No. This is an unmanaged switch, so it performs basic MAC-level bridging only. All ports are on a single broadcast domain, and there is no QoS, SNMP, or management interface. If your surveillance deployment requires traffic isolation or prioritization, upgrade to a managed variant.

Q: What power supply do I need?

A: The minimum requirement is a PS-A12060 power supply (12VDC, 0.6A baseline). This ensures stable operation for the switch fabric and SFP transceiver electronics. Undersized PSUs may cause intermittent link loss or transceiver malfunction.

Q: Can I use any SFP module in the fiber ports?

A: The CNFE4FX2TX2US accepts standard 100Mbps SFP modules (850nm multimode, 1310nm or 1550nm single-mode). Do not use 1000Mbps (gigabit) SFPs — they will not interoperate reliably. Consult Comnet's product compatibility documentation for approved SFP vendors.

Q: Is the CNFE4FX2TX2US still supported?

A: This product has been discontinued. While remaining units may be available through channel partners, Comnet no longer provides active firmware updates or extended technical support. For new deployments, consider current models in the industrial hardened switch line.

Q: Can I daisy-chain multiple CNFE4FX2TX2US switches?

A: Yes, you can connect two switches via a fiber or copper link to extend connectivity. However, unmanaged switches do not prevent broadcast storms or loops — if you create a physical loop, use RSTP or manual segmentation to break it. For larger multi-site networks, managed switches with STP are safer.

Q: What is the temperature operating range?

A: Operating specifications are not provided in the available documentation. Contact Comnet technical support for environmental ratings if your deployment involves extreme heat, cold, or humidity.

Eden Phillips

The CNFE4FX2TX2US is a solid workhorse for surveillance networks that need to bridge fiber and copper without management overhead. The hybrid port design — 2 SFP fiber + 2 copper RJ-45 — is the key selling point here. If you're extending a camera link 2+ km over single-mode fiber to avoid ground-loop issues or RF noise in an industrial park, this unmanaged 100Mbps switch gets the job done without CLI configuration or firmware headaches.

Technical Highlights:

• SFP Fiber Modularity: Two standard SFP slots let you drop in multimode (850nm) for short runs under 2 km, or single-mode (1310/1550nm) for long-haul extensions. No need to buy a different switch model — just choose the right transceiver. This flexibility cuts spares inventory and deployment timelines.
• 100Mbps Non-Blocking per Port: Each of the four ports runs at 100Mbps independently, meaning two simultaneous camera streams at 5 Mbps compressed video won't saturate the fabric. Useful for H.265 compressed surveillance payloads where per-stream bandwidth is modest.
• Unmanaged Bridging — Zero Config: Plug in power (PS-A12060 minimum), connect your cameras and fiber links, and traffic flows. No VLAN fumbling, no SNMP polling overhead. In a busy warehouse or utility dispatch center, this simplicity is a real advantage.

Deployment Considerations:

• Discontinued Product: This model is EOL. While remaining inventory may be available, Comnet is not issuing new firmware or extended support. If you rely on this switch, stock spares now or plan a migration to current L2+ hardened models (like the CNGE11FX3TX8MS) before warranty/support lapses.
• No Loop Protection: As an unmanaged switch, it cannot run STP (Spanning Tree). If you accidentally cable a physical loop into your topology, broadcast storms will cripple the network. In multi-site deployments, add managed L2+ switches or use manual segmentation to prevent loops.

Best fit: rooftop-to-cabinet fiber runs in utility or light-industrial surveillance, or any outdoor multi-building deployment where you need EMI isolation and reach beyond standard copper limits. Not for enterprise VMS deployments requiring VLAN segmentation or real-time network diagnostics.