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Compact metal network converter with one RJ45 and two SFP ports

TRENDnet

TRENDnet TFC-G21SFP 1000BASE-T to Dual SFP Media Converter

SKU CH-R76D-NWVRJ

Converts a Gigabit RJ-45 link to dual SFP fibre ports with automatic redundancy

  • Product weight1.05
  • Converts copper Gigabit Ethernet to dual fiber SFP links
  • Redundant SFP uplink maintains connection if one fiber link fails
  • SFP slots accept both multimode and single-mode modules
  • Auto-MDIX RJ-45 port enables full-duplex Gigabit at wire speed
  • Compact standalone converter meets NDAA and TAA compliance

Copper-to-Fiber Media Converter with Dual SFP

The TRENDnet TFC-G21SFP converts a 1000BASE-T copper Ethernet link into two independent 1G fiber connections using standard SFP modules. It serves network engineers and integrators who need to extend a single gigabit segment over multimode or single-mode fiber while keeping the copper endpoint unchanged.

Redundant Uplink Under Continuous Traffic

Dual SFP ports operate in a redundant mode so that if the active fiber link fails the second link takes over without manual intervention. The RJ-45 port runs full-duplex at wire speed, allowing sustained 1 Gbps throughput in both directions during prolonged transfers or streaming workloads.

Compact Metal Enclosure for Rack or Wall Mount

A rugged metal housing protects the circuitry and provides mounting ears for standard rack or wall installations. One RJ-45 connector with auto-MDIX and two SFP cages accept any combination of SX or LX modules, letting installers match fiber type and distance on site without replacing the converter.

How it compares

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

Price $43.99
Cheaper than about 77% of the 1,471 comparable items (median $138.99).

Specifications

Product
Brand nameTRENDnet
Model nameTFC-G21SFP

Questions about this item

Does the TFC-G21SFP run silently and stay cool when operated continuously?

The unit has no fan and uses a compact metal enclosure for passive heat dissipation, so it runs silently and stays cool during continuous operation.

What SFP modules do I need to use the two fiber ports on this converter?

You must supply your own 1 Gbps SFP transceivers — either multimode SX or single-mode LX — because the TFC-G21SFP ships with empty SFP cages.

Can I keep my existing Cat5e patch cables and gigabit switch when adding this TFC-G21SFP?

Yes, the Auto-MDIX RJ-45 port works with standard Cat5e or better copper cabling and connects directly to any 1000BASE-T switch port at full-duplex wire speed.

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