We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Two small white network boxes with LC ports and power leads

BFKK

BFKK 1.25Gbps Bidi Gigabit Media Converter 2 Pack 550M

SKU CH-9ABM-PNCXW

A pair of bidirectional Gigabit fibre-to-Ethernet converters with SFP transceivers included for links up to 550 metres

  • Converts fibre to copper over 550 metres
  • Bidirectional transceivers handle 1.25 Gbps throughput
  • Auto-negotiates 10/100/1000 Mbps full or half duplex
  • LEDs show power, link and duplex status instantly
  • Operates reliably from 0 °C to 60 °C

Two-Pack Media Converter Kit

This kit includes two single-mode fibre-to-Ethernet media converters and two bidirectional SFP LC transceivers. It connects 10/100/1000Base-T copper links to 1000Base-LX fibre runs. The hardware suits installers extending LAN segments over single-mode fibre up to the rated distance.

Sustained Operation Behaviour

Each converter auto-negotiates at 10, 100 or 1000 Mbps and handles full or half duplex with MDI/MDIX crossover. Jumbo frames up to 9K bytes pass through without fragmentation. The units operate continuously from 0°C to 60°C and draw power from the included 5 V 1 A UL-listed adapters.

Upgrade Path And Fit

The pair replaces a single copper run between two switches or a switch and a remote device when distance exceeds twisted-pair limits. It is not suited for multimode fibre plants or for links requiring more than the 1.25 Gbps line rate. Buyers needing longer reach or higher bandwidth should specify different transceivers.

Highlights

  • Converts fibre to copper over 550 metres
  • Bidirectional transceivers handle 1.25 Gbps throughput
  • Auto-negotiates 10/100/1000 Mbps full or half duplex
  • LEDs show power, link and duplex status instantly
  • Operates reliably from 0 °C to 60 °C

Specifications

No published specifications for this item yet.

Questions about this item

How much heat does the 5 V 1 A power supply generate when the converter runs continuously?

The unit operates from 0 °C to 60 °C and draws 5 V at 1 A, so heat output stays low enough for passive cooling in normal indoor use.

Which cables and patch leads do I need to have on hand before installing the RJ45-to-SFP link?

You need single-mode fibre with LC duplex connectors for the SFP side and Cat 5e or better UTP/STP copper for the RJ45 side; both transceiver modules and power supplies are already in the box.

Will the 1.25 Gbps SFP port negotiate down to 100 Mbps on an older switch that only supports 802.3u?

Yes, the RJ45 port auto-negotiates 10/100/1000 M and complies with IEEE 802.3u, so it will link at 100 Mbps full or half duplex with legacy equipment.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.