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Small silver SFP transceiver module with black LC duplex port and side label

STARTECH

STARTECH J4859CST SFP transceiver 1000BASE-LX 1Gbps 1310nm LC 10km

SKU CH-PKK2-JWKDZ MPN J4859CST

Connects network equipment over single-mode or multi-mode fibre up to 10 km using an LC duplex connector at 1 Gbps

  • Device TypeTransceiver
  • StandardsIEEE 802.3z 1000BASE-LX
  • Wavelength1310nm
  • Fiber CableSingle Mode / Multi Mode
  • ProtocolsTCP/IP
  • Ports1 - Fiber Optic LC Duplex Female

Type 1000Base-LX

  • Works with HPE 1400, 1700, 1820, 2520, 2530 switches
  • 1000BASE-LX 1 Gbps over 10 km single-mode or multi-mode fiber
  • Hot-swappable with Digital Diagnostic Monitoring for SNMP management
  • Lifetime warranty covers module life without voiding OEM warranty
  • Compatible with MSA switches from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link

HPE J4859C compatible 1Gbps SFP

This StarTech.com SFP transceiver is a 1000BASE-LX module built for gigabit Ethernet links over fibre. It operates at 1310nm and accepts both single-mode and multi-mode cable with an LC duplex connector. The unit is coded for full HPE J4859C compatibility and also works in MSA-compliant switches from several other vendors. It targets network engineers who need a hot-swappable 1GbE uplink for HPE 1400, 1700, 1820, 2520, 2530 and similar switches.

Hot-swap install with DDM monitoring

The module slides into any SFP cage without tools and is hot-swappable in supported HPE routers and switches. Digital Diagnostic Monitoring reports real-time status to SNMP management tools so administrators can verify link health remotely. The only common issue is inserting the transceiver into a port that does not accept uncoded modules; such ports will not recognise the device. Ensure the switch firmware allows third-party optics before deployment.

Check switch coding and fibre type

Confirm that the target switch accepts uncoded or HPE-coded SFP modules and that its SFP ports support 1000BASE-LX at 1310nm. Verify the installed fibre plant is single-mode or multi-mode with LC duplex terminations and that the planned link distance does not exceed 10km. Operating temperature must stay within 0°C to 70°C and storage within -40°C to 85°C at 5–95% relative humidity.

Highlights

  • Works with HPE 1400, 1700, 1820, 2520, 2530 switches
  • 1000BASE-LX 1 Gbps over 10 km single-mode or multi-mode fiber
  • Hot-swappable with Digital Diagnostic Monitoring for SNMP management
  • Lifetime warranty covers module life without voiding OEM warranty
  • Compatible with MSA switches from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link

Specifications

BrandStarTech.com
ModelJ4859CST
Device TypeTransceiver
StandardsIEEE 802.3z 1000BASE-LX
Wavelength1310nm
Fiber CableSingle Mode / Multi Mode
ProtocolsTCP/IP
Ports1 - Fiber Optic LC Duplex Female
Max Distance10 km (6.2 mi)
Transfer Rate1 Gbps
TemperatureOperating Temperature: 0 degree C to 70 degree C (32 degree F to 158 degree F)
Storage Temperature: -40 degree C to 85 degree C (-40 degree F to 185 degree F)
Humidity5~95% RH
FeatureDelivers reliable Gigabit Ethernet connections for 1000Base-LX compliant networks
100% HP compatible, equivalent to J4859C
Backed by lifetime warranty and free lifetime technical support
Also available in a 10-pack (J4859C10PKST) for maximum cost savings
Meets or exceeds OEM specifications and MSA (Multi-Source Agreement) industry standards
Supports Digital Diagnostics Monitoring (DDM)
1310 nm optical wavelength
Supports single-mode (maximum distance 10 km / 6.2 mi.) and multimode (maximum distance 550m / 1804 ft.)
LC fiber connector
Maximum data rates up to 1.25 Gbps
Hot-pluggable
Dimensions0.50" x 0.60" x 2.20"
Weight0.04 lb.
Package Contents1 - SFP transceiver
Shipping weight0.05 kg
Package size196 × 89 × 28 mm

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Questions about this item

How can I verify the J4859CST is operating correctly after installation?

Check the switch management interface for a link light at 1000BASE-LX, confirm the Digital Diagnostic Monitoring reports normal temperature and optical levels, and run a ping test across the 10 km fiber path.

What does the package contain and what must I supply myself?

The box includes one SFP transceiver; you must provide LC duplex fiber patch cables and a compatible HPE or MSA switch with an open SFP slot.

Which version should I choose for a 10 km single-mode link on an HPE 2530 switch?

The J4859CST is the correct 1310 nm 1000BASE-LX module rated for 10 km on single-mode fiber and is 100 % compatible with the HPE 2530.

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