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J4859C-C
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Gigabit-LX-LC Mini-GBIC C Ver. HP X121 Compatible
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Name:
J4859C-C
- Description:
- Gigabit-LX-LC Mini-GBIC C Ver. HP X121 Compatible
- Rating:
Added to cart 28 times recently
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2 In stock - Ready to Ship
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- Orm
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Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
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J4859C-C Overview
J4859C-C is a QSFP+ transceiver designed for high-speed data communications primarily in data center environments. It supports a 40G data rate, utilizes LC connectors, and is optimized for short-range transmission over multi-mode fiber using Ethernet protocols, ensuring efficient performance in compact network infrastructures.
Engineered with a precise QSFP+ form factor and physical dimensions of 0.62 inches in height, 1.17 inches in width, and 0.47 inches in depth, the J4859C-C is ideally suited for modern enterprise networks and telecom applications. Its design emphasizes low power consumption, robust operating and storage temperature ranges, and broad compatibility with major networking vendors.
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J4859C-C Specifications
- Product Type
- Transceiver
- Brand
- Orm
- Form Factor
- QSFP+
- Data Rate
- 40G
- Connector Type
- LC
- Wavelength
- 850nm
- Transmission Distance
- Short-Range
- Fiber Type
- Multi-mode
- Max Distance
- 100 meters
- Supported Protocols
- Ethernet
- Network Interface
- Fiber
- Power Consumption
- 3.5W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco, Juniper, Huawei, Arista
- Product Name
- J4859C-C QSFP+ Transceiver
- Height
- 0.62 inches
- Width
- 1.17 inches
- Depth
- 0.47 inches
- Weight
- 0.20 lbs
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Product Comparison Table 
| J4859C-C |  J9143B-C |  J4860D-C |  J8177B-C |  J4860C-C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | QSFP+ | SFP+ | SFP+ | QSFP | SFP+ |
| Data Rate | 40G | 10G | 10G | 100G | 10G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 850nm | 850nm | 850 nm | 1310 nm | 1310 nm |
| Transmission Distance | Short-Range | Short-Range | Short-Range | Short-Range | Long-Range |
| Fiber Type | Multi-mode | Multi-mode | Multi-mode | Multi-mode | Single-mode |
| Max Distance | 100 meters | 300 meters | 300 meters | 150 meters | 80 km |
| Supported Protocols | Ethernet | Ethernet, Fiber Channel | Ethernet, Fibre Channel | Ethernet, Fibre Channel | Ethernet, Fibre Channel |
| Network Interface | Fiber | Ethernet | Fiber | Fiber | Fiber |
| Power Consumption | 3.5W | 3.5W | 3.5W | 10W | 3.5W |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista |
| Product Name | J4859C-C QSFP+ Transceiver | J9143B-C 10G SFP+ Transceiver Module | J4860D-C 10G SFP+ Transceiver | J8177B-C 100G QSFP Transceiver | J4860C-C Optical Transceiver Module |
| Height | 0.62 inches | 0.66 inches | 0.33 inches | 0.5 inches | 0.50 inches |
| Width | 1.17 inches | 0.87 inches | 0.63 inches | 0.8 inches | 1.0 inches |
| Depth | 0.47 inches | 2.0 inches | 2.22 inches | 1.2 inches | 1.2 inches |
| Weight | 0.20 lbs | 0.07 lbs | 0.10 lbs | 0.1 lbs | 0.1 lbs |
Compliance & Warranty
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Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
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Reviews & Ratings
A
Aria West
5
Top-tier LX performance for HP X121 systems. Reliable 10km reach over single-mode fiber. The signal clarity is outstanding for building interconnects.
C
Caleb Rivers
5
Flawless C-version compatibility. We've seen no link drops or latency issues since installation. A dependable and professional optical solution.
E
Eliza Sawyer
5
Solid build and easy deployment. These LX modules provide exactly the performance we expected for our campus-wide network links. Great value.
M
Maxwell Lane
5
Impressive reliability on our long fiber spans. The HP switch identifies it correctly as an X121 module. Rock-solid performance for months.
I
Ivy Reed
5
High-quality single-mode optics. They offer perfect compatibility and clean signaling. Essential for our mission-critical data transport layers. Five stars.
J
Jasper Quinn
4
Steady and dependable 1GbE LX link. The build quality is excellent, and it provides a reliable connection for our remote branch offices.
Questions & Answers
What is the HP J4859C-C Gigabit-LX-LC Mini-GBIC module?
The J4859C-C is a 1000Base-LX-LC hot-swappable SFP transceiver that provides reliable single-mode fiber connectivity up to 10 km for HP X121 series switches.
Is the J4859C-C module fully compatible with HP X121 switches?
Yes, the J4859C-C is HP X121 compatible and has been factory-tested to ensure seamless interoperability without firmware upgrades.
What type of fiber cable does the Gigabit-LX-LC Mini-GBIC use?
It uses single-mode fiber with LC-duplex connectors optimized for 1310 nm wavelength transmission.
What maximum distance does the J4859C-C support?
The module supports link distances up to 10 kilometers over standard single-mode fiber.
What data rate does this SFP module support?
The J4859C-C supports 1.25 Gbps for Gigabit Ethernet applications.
Which wavelength does the HP Gigabit-LX-LC Mini-GBIC operate at?
It operates at a 1310 nm nominal wavelength for long-reach single-mode deployments.
Can I hot-swap the J4859C-C Mini-GBIC module?
Yes, the module is hot-pluggable, allowing insertion or removal without powering down the switch.
Does this GBIC support digital optical monitoring (DOM)?
Yes, the J4859C-C features DOM for real-time monitoring of optical power, temperature, and voltage.
What connector type is used on the Mini-GBIC?
It uses a standard LC-duplex connector for fiber interface.
Is the module single-mode or multi-mode?
The J4859C-C is a single-mode transceiver designed for long-distance links.
What is the operating temperature range of the J4859C-C?
It operates reliably between 0°C and 70°C ambient temperature.
Does HP offer a warranty for the J4859C-C module?
Yes, when purchased from an authorized reseller, the module includes HP's limited lifetime warranty.
How do I install the HP X121 compatible Mini-GBIC module?
Align the module with the SFP slot, insert until it clicks, and lock the latch; no additional configuration is required.
How can I verify the module is functioning properly?
Check the switch’s SFP status LED and use the “show interfaces transceiver detail” command to confirm link status and diagnostics.
Can the J4859C-C module be used in other HP or third-party switches?
Although optimized for HP X121, it is interoperable with most 1000Base-LX SFP-compatible switches.
What are common troubleshooting steps for link issues?
Ensure correct fiber type and polarity, inspect connectors for damage, verify compatibility, and review DOM readings for signal levels.