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Small rectangular SFP transceiver module with matte metal housing, LC duplex port and side label

Brute Networks

Brute Networks 3CSFP91 1000BASE-SX 550m MMF 850nm SFP transceiver

SKU CH-WA97-PZ4EB

A 1000BASE-SX SFP transceiver delivers 1 Gbps over multi-mode fibre up to 550 m at 850 nm wavelength

  • Port count1000Base-SX
  • Product typeTransceiver
  • Supported standardsMMF
  • Optical wavelength850 nm
  • Fiber modeMulti-mode Optical Fiber
  • Maximum range550m
  • Up to 550 m reach over multi-mode fibre
  • 850 nm wavelength for short-range Gigabit links
  • 100 % 3Com compatible, coded for OEM recognition
  • Commercial 0 °C to 70 °C operating range
  • MSA compliant with digital diagnostic monitoring

1000BASE-SX SFP for 3Com equipment

This Brute Networks 3CSFP91 transceiver delivers 1 Gbps over multi-mode fibre at 850 nm. It reaches 550 m and fits any SFP slot coded for 3Com hardware. Digital diagnostics let you monitor link health in real time. Commercial temperature rating covers 0 °C to 70 °C operation.

Replaces OEM 3Com 3CSFP91 modules

Swap out a failed or missing original transceiver without changing switch firmware or cabling. The module meets MSA standards and initialises identically to the factory part. Mixed deployments with other OEM or third-party optics work without extra configuration. Lifetime warranty backs the replacement.

Suits network teams extending 3Com switches

Engineers adding fibre uplinks or repairing existing 1000BASE-SX links will find this drop-in compatible. Buyers needing single-mode reach, longer distances, or non-3Com coding should select a different module.

How it compares

Measured against everything we stock in SFP & SFP+ Transceiver Modules, at today’s prices. Recalculated every night.

Price $27.99
Cheaper than about 89% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand name3com
Model name3CSFP91
Product typeTransceiver
Performance
Transfer speed1 Gbit/s
Connectivity
Supported standardsMMF
Optical wavelength850 nm
Fiber modeMulti-mode Optical Fiber
Maximum range550m
Ports & slots
Port count1000Base-SX
Size & build
Product weight1 oz
Environment & compliance
Temperature range0? ~ 70? C
More details
Indicator lightsPower, Link/Activity, Full-Duplex, and Speed

Questions about this item

Does the 3CSFP91 use an LC duplex connector for the fiber patch cord?

Yes, the module terminates in an LC duplex connector that mates with standard multi-mode patch cables.

What is the correct way to seat the transceiver in an SFP slot so the latch engages?

Slide the module in until you feel a click, then give a gentle pull to confirm the latch has locked before connecting cables.

When should the transceiver be replaced if link errors appear on a 550 m multi-mode run?

Clean the LC ferrules first; if CRC errors persist after cleaning, swap the module because the 850 nm laser may have degraded.

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