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CX4 transceiver delivered consistent 10G performance.
J8440C
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HP X131 10G X2 CX4 Transceiver
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J8440C
- Description:
- HP X131 10G X2 CX4 Transceiver
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J8440C Overview
J8440C is a high-performance SFP+ transceiver engineered for robust 10G Ethernet connectivity in modern data centers, enterprise networks, and telecom environments. Designed with an LC connector and optimized for multi-mode fiber, it supports short-range transmission distances up to 300 meters while maintaining compliance with Ethernet standards for reliable data transport.
Crafted with a compact form factor and precise physical dimensions, J8440C delivers efficiency and ease of integration in diverse networking scenarios. Officially supporting key protocols and exhibiting low power consumption, it is ideally suited for mission-critical applications where performance and scalability are paramount.
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J8440C Specifications
- Product Type
- Transceiver
- Form Factor
- SFP+
- Data Rate
- 10G
- Connector Type
- LC
- Wavelength
- 850 nm
- Transmission Distance
- Short-Range
- Fiber Type
- Multi-mode
- Max Distance
- 300 meters
- Supported Protocols
- Ethernet
- Network Interface
- Ethernet
- Power Consumption
- 3.5 W
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco / Juniper / Huawei / Arista
- Product Name
- J8440C 10G SFP+ Transceiver
- Height
- 0.5 inches
- Width
- 0.6 inches
- Depth
- 0.7 inches
- Weight
- 0.1 lbs
J8440C Use Case
High-Density Data Center Spine-Leaf Interconnect
In large-scale data centers running thousands of virtual machines, IT architects deploy the J8440C-HP X131 10G X2 CX4 Transceiver to establish redundant 10 Gbps links between spine and leaf switches. This scenario delivers consistent low latency and simplifies cabling with CX4 copper Twinax, enabling up to 24 ports per chassis. Benefit: maximized port density, streamlined operations, and predictable performance for real-time applications.
Enterprise SAN Replication over 10G CX4 Copper
A global enterprise storage team uses the J8440C-HP X131 10G X2 CX4 Transceiver to link primary and DR storage arrays across server racks with 10 Gbps fiber-channel over copper. In this scenario, synchronous replication maintains RPOs under one second while reducing fiber-optic spend. Benefit: accelerated backups, robust disaster recovery, and lower total cost of ownership through economical CX4 connectivity.
HPC Cluster Low-Latency Compute Node Connectivity
Research institutions deploying high-performance computing clusters integrate the J8440C-HP X131 10G X2 CX4 Transceiver to interconnect compute nodes and GPU racks. This setup delivers sub-2 µs port-to-port latency and sustained 9.95 Gbps throughput for MPI workloads. Benefit: optimized parallel processing, minimized jitter for scientific simulations, and scalable expansion without costly recabling.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| J8440C |  JD063B |  QW928A |  JD119B |  J8177C | |
|---|---|---|---|---|---|
| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP+ | SFP+ | SFP+ | SFP+ | SFP+ |
| Data Rate | 10G | 10G | 10G | 10G | 10G |
| Connector Type | LC | LC | LC | LC | LC |
| Wavelength | 850 nm | 1310nm | 850nm | 1310nm | 850nm |
| Transmission Distance | Short-Range | Long-Range | Short-Range | Long-Range | Short-Range |
| Fiber Type | Multi-mode | Single-mode | Multi-mode | Single-mode | Multi-mode |
| Max Distance | 300 meters | 10 km | 300 meters | 80 km | 300 meters |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet, Fibre Channel |
| Network Interface | Ethernet | Fiber | Fiber | Fiber | Fiber |
| Power Consumption | 3.5 W | 3.7W | 3.5W | 3.5 W | 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 | J8440C 10G SFP+ Transceiver | JD063B 10G SFP+ Long Range Transceiver | QW928A High-Performance SFP+ Transceiver | JD119B High Performance SFP+ Transceiver | J8177C SFP+ Transceiver Module |
| Height | 0.5 inches | 0.35 inches | 0.15 inches | 0.6 inches | 0.84 inches |
| Width | 0.6 inches | 0.87 inches | 0.55 inches | 1.0 inches | 1.18 inches |
| Depth | 0.7 inches | 1.65 inches | 0.70 inches | 1.3 inches | 3.10 inches |
| Weight | 0.1 lbs | 0.1 lbs | 0.05 lbs | 0.1 lbs | 0.07 lbs |
Reviews & Ratings
B
Bilal Rashid
5
Recognized instantly and required no tuning.
T
Thomas Klein
4
Stable link during testing.
S
Soren Kristensen
4
Good option for legacy CX4 setups.
A
Alex Monroe
4
Met expectations.
Questions & Answers
What is the HP X131 10G X2 CX4 Transceiver (SKU J8440C)?
The HP X131 10G X2 CX4 Transceiver (SKU J8440C) is a high-performance, hot-pluggable 10 Gigabit Ethernet copper transceiver designed for CX4 twinax cabling, providing reliable, low-latency connectivity in HP networking environments.
Which HP switches are compatible with the J8440C transceiver?
The J8440C transceiver is compatible with HP switches featuring X2 ports, including HP 8200 zl Series, HP 5400R/5500 EI/5900 Series, and HP 10500/12500 Core Switches. Verify firmware and port compatibility before deployment.
What cable type is required for the HP X131 10G X2 CX4 Transceiver?
The HP X131 10G X2 CX4 Transceiver requires CX4 twinax copper cables (12 Gbps aggregate throughput), optimized for 10 Gigabit Ethernet connections up to 15 meters.
What is the maximum transmission distance for the J8440C transceiver?
The J8440C transceiver supports up to 15 meters (49.2 feet) over CX4 twinax copper cables.