Cisco SFP-GE-S-2 compatibele 1000BASE-SX SFP 1310nm 2km DOM duplex LC MMF transceivermodule

Network administrators upgrading legacy Cisco switches in campus buildings often need a reliable, cost-effective optical link across short distances. This FS.COM SFP transceiver delivers exactly that: a hot-pluggable module that slots into any SFP port and provides a 1.25 Gbps Gigabit Ethernet connection over multimode fiber up to 2 km. It is fully compatible with Cisco SFP-GE-S-2, making it a drop-in replacement for original optics without the premium price.

Key specifications

• Form Factor: SFP (Small Form-Factor Pluggable)
• Data Rate: 1.25 Gbps (1000BASE-SX)
• Wavelength: 1310 nm (FP Laser)
• Max Distance: 2 km over multimode fiber (MMF)
• Connector: Duplex LC
• Digital Optical Monitoring (DOM): Yes
• Operating Temperature: 0°C to 70°C
• Power Consumption: < 1W, 3.3V supply
• Transmit Power: -9.5 dBm to -3 dBm
• Receive Sensitivity: -20 dBm
• Compliance: MSA, RoHS

Why choose it

This transceiver is engineered for seamless integration with Cisco equipment, ensuring identical performance and reliability. Its DOM capability allows real-time monitoring of temperature, optical power, and voltage, simplifying troubleshooting. The low power consumption reduces energy costs in dense deployments, while the MSA compliance guarantees interoperability with any standard SFP slot.

Ideal use cases

• Upgrading existing Cisco switches to Gigabit Ethernet over existing multimode fiber infrastructure.
• Connecting floors or buildings within a campus network where 2 km reach is sufficient.
• Cost-effective replacement for failed or end-of-life Cisco SFP-GE-S-2 modules.
• Building high-density aggregation links in data centers using multimode fiber.

Good to know

The module supports full-duplex operation and is hot-pluggable, allowing installation without powering down the switch. It is compatible with a wide range of Cisco switches, including Catalyst 2960/3560/3750/4500/6500 series and Nexus platforms. Each unit is individually tested for compatibility and performance, and comes with FS.COM's lifetime warranty.