Dell PowerConnect 320-2879 Compatible 1.25G SFP Transceiver Module
This Dell PowerConnect 320-2879 compatible transceiver provides 1.25G connectivity in a hot-swappable SFP package. Its optical design operates at 1310nm for up to 10km on SMF, using Duplex LC. Complete parameters and related OEM references help field technicians install, maintain and identify the exact compatible module.
OEM Part Number: 320-2879HT Part Number: SFP1G-LX-31
Product Highlights
- Compatible alternative to Dell PowerConnect 320-2879
- 1.25G connectivity at 1.25Gbps
- Optical wavelength: 1310nm
- Specified reach: 10km on SMF
- Duplex LC / SMF interface
- Digital diagnostic monitoring: Supported
- Operating temperature: 0 to 70°C (32 to 158°F)
Specifications
| Dell Compatible | 320-2879 |
|---|---|
| Manufacturer | HT |
| HT Part Number | SFP1G-LX-31 |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 1310nm |
| Max. Cable Distance | 10km@SMF |
| Connector | Duplex LC |
| Media | SMF |
| Transmitter Type | FP |
| Receiver Type | PIN |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| TX Power | -9.5~-3dBm |
| Receiver Sensitivity | < -20dBm |
| Power Consumption | ≤1W |
| Receiver Overload | -3dBm |
| Bit Error Ratio (BER) | 1E-12 |
| Extinction Ratio | >9dB |
| EMC (Electro Magnetic Compatibility) | Supported |
| MTBF (LX) | 4,761,904 Hours |
| Protocols | IEEE 802.3ah-2004, IEEE 802.3z, SFF-8472, SFP MSA (INF-8074i) Compliant |
Field Installation and Maintenance
Inspect the connector and patch lead before installation, then support the fiber without pulling on the module housing. Release the latch properly during maintenance and keep dust protection on unused interfaces. If a module is removed for later use, retain its part-number label and record its original port. For this model, the principal parameters are data rate 1.25Gbps, wavelength 1310nm, rated reach 10km on SMF.
Applications and Optical Link Design
Use this module for equipment interconnection over the specified single-mode fiber plant, including enterprise backbone, campus, metro or data-center interconnect links according to its rated distance. Confirm that both ends use the same optical standard and wavelength plan, and allow for connector, splice and patch-panel loss within the stated power budget.
Before deployment, check the host port type, supported data rate and firmware requirements. The 1.25G interface configuration must match the remote equipment; sharing a SFP housing alone does not make two transceiver types interoperable.
The single-mode link budget should include fiber attenuation, connectors, splices and panels over the intended 10km on SMF route. Keep the Duplex LC interface clean and match the remote optical standard. Consider receiver overload as well as insufficient power on short links.
Optical Acceptance, Diagnostics and Handling
For this model, the specified transmit-power range is -9.5~-3dBm; receiver sensitivity is < -20dBm. A sound acceptance record includes link state, diagnostic temperature, supply voltage and transmit or receive levels where the host exposes them. Compare the readings with the stated ranges rather than treating any received light as proof of adequate margin. Persistent alarms or borderline values should trigger an end-face and complete-channel inspection. Diagnostic monitoring is listed as Supported. Before every insertion, keep dust caps in place until the patch lead is ready, avoid touching the optical end face and use an appropriate inspection and cleaning procedure. Do not look into an active optical interface.
Quality Assurance and Packaging
Each 320-2879 compatible module is inspected, powered up and functionally checked before protective packing. Dust caps and individual trays shield the interface during transport. Customer references, rack groups and project packing lists can be added for volume orders.
Dell PowerConnect Compatibility and Factory Testing
The module is checked for host recognition as 320-2879, link establishment and diagnostic reporting. Physical cage fit alone is not treated as evidence of compatibility. Equipment model, hardware revision and software release can be reviewed before dispatch where platform behavior is uncertain.
Frequently Asked Questions
Is this an original Dell PowerConnect transceiver?
No. It is an HT-manufactured compatible alternative for equipment that specifies 320-2879, not an original Dell PowerConnect-branded module.
Which fiber and connector are required?
Use Duplex LC with SMF. The specified maximum reach is 10km on SMF, subject to fiber quality and total link loss.
Can it be mixed with another wavelength or reach version?
Only when the two ends share the same optical standard, wavelength plan and supported data rate. Check the exact part numbers and link budget rather than relying only on the module form factor.
Ordering Information
Use 320-2879 as the compatibility cross-reference and SFP1G-LX-31 as the HT ordering identity. Keep other reaches or wavelength directions on separate order lines. Neutral labels, customer packaging and project-specific compatibility review are available on request.
Shipping and Lead Time
Standard configurations normally ship within one to three working days, with production lead times confirmed for larger quantities. International courier, air freight and sea freight are available; customer courier accounts and nominated forwarders are accepted.
