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Small rectangular SFP transceiver with dual LC ports, matte metal finish

Cisco Systems, Inc.

Cisco GLC-SX-MMD SFP Transceiver 850nm MMF 1Gbps LC/PC

SKU CH-RP3K-0EG5F

Hot-swappable 1 Gbps SFP transceiver for 850 nm multi-mode fiber with dual LC/PC connectors and DOM support

  • Port countDual LC/PC connector
  • Brand compatibilityMultisource Agreement Compliant Cisco ME 3400 Catalyst Expre
  • Product typeTransceiver
  • Optical wavelength850 nm
  • Fiber modeMMF
  • Supported protocolsTCP/IP
  • Gigabit Ethernet speeds up to 1000 Mbps over optical fiber
  • Hot-swappable SFP module enables installation without network downtime
  • 850 nm wavelength operates on multi-mode fiber for short-range links
  • Dual LC/PC duplex connector ensures secure fiber patching
  • Compact .3 x .5 x 2.2 inch form factor fits dense switch ports

Cisco GLC-SX-MMD SFP transceiver for Gigabit

This Cisco GLC-SX-MMD SFP transceiver connects Gigabit Ethernet ports to multi-mode fiber networks. It operates at an 850nm wavelength with dual LC/PC connectors for 1000Base-SX links. The hot-swappable module plugs directly into compatible Cisco switches and routers. Network administrators use it to extend links between servers and aggregation switches.

Upgrade from copper or older GBIC modules

The module replaces fixed copper ports or larger GBIC transceivers when fiber reach is required. It is worth the change when cable runs exceed twisted-pair limits or when electromagnetic immunity matters. The extended operating temperature range supports deployment in industrial cabinets. DOM support adds real-time optical diagnostics without a maintenance window.

1 Gbps over multi-mode fiber with 500 m reach

The transceiver delivers 1000 Mbps over standard multi-mode fiber at 850nm. It comfortably handles distribution-layer uplinks and server-farm cross-connects within a building. The link budget runs out on campus runs beyond 500 metres or when single-mode fiber is mandated. For those distances a long-wavelength or single-mode module is required.

How it compares

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

Price $229.99
Pricier than about 64% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameCisco Systems, Inc
Part numberGLC-SX-MMD=
Product typeTransceiver
Performance
Transfer speed1 Gbit/s
Connectivity
Optical wavelength850 nm
Fiber modeMMF
Supported protocolsTCP/IP
Ports & slots
Port countDual LC/PC connector
Size & build
Product dimensionsHeight:
0.3 in
Width:
0.5 in
Depth:
2.2 in
Shipping weight0.05 kg
Package size152 × 132 × 3 mm
In the box
In the boxWeight (Approximate):
0.17 l

Questions about this item

What slot size does the 0.5-inch wide SFP module require?

The transceiver fits a standard SFP cage that accepts a 0.5-inch wide module; the depth is 2.2 inches and the height is 0.3 inches.

Which step is often missed when hot-swapping this module into a Catalyst 2960 switch?

Remove the dust caps from the dual LC/PC connectors and the port, then insert the module until it clicks; forgetting to remove the caps blocks the optical link.

When should the DOM readouts be checked on this 850 nm transceiver?

Monitor the digital optical monitoring data periodically for transmit power, receive power, temperature and voltage; a drift beyond normal ranges signals that the module may need replacement.

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