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378929-B21-C
1000BASE-SX SFP HP BladeSystem Compatible
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378929-B21-C is an SFP+ transceiver designed for high-performance networking, supporting a data rate of 10G and featuring an LC connector for efficient optical interfacing. It offers long-range transmission over single-mode fiber and complies with Ethernet and Fibre Channel protocols, making it well-suited for telecom and enterprise environments.
This compact module measures approximately 0.6 inches in height, 0.75 inches in width, and 2.5 inches in depth, ensuring easy integration into dense data center configurations. With robust design and precise performance specifications, the 378929-B21-C transceiver is engineered for reliability and versatility across various high-speed networking use cases.
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| 378929-B21-C |  378928-B21-C | |
|---|---|---|
| Product Type | Transceiver | Transceiver |
| Form Factor | SFP+ | QSFP |
| Data Rate | 10G | 100G |
| Connector Type | LC | MPO |
| Wavelength | 1310 nm | 850nm |
| Transmission Distance | Long-Range | Short-Range |
| Fiber Type | Single-mode | Multi-mode |
| Max Distance | 10 km | 100 meters |
| Supported Protocols | Ethernet, Fibre Channel | Ethernet, Fibre Channel |
| Network Interface | Fiber | Ethernet |
| Power Consumption | 1.5W | 3.5W |
| Operating Temperature | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V |
| Compatibility | Cisco, Juniper, Huawei, Arista | Cisco, Juniper, Huawei, Arista |
| Product Name | 378929-B21-C 10G LR SFP+ Transceiver | 378928-B21-C High-Speed QSFP Transceiver |
| Height | 0.6 inches | 0.25 |
| Width | 0.75 inches | 0.90 |
| Depth | 2.5 inches | 1.50 |
| Weight | 0.2 lbs | 0.05 |
Perfect for our HP BladeSystem. Recognized instantly and provides stable 1000BASE-SX performance. Rock-solid reliability for our multi-mode links.
High-quality SX transceivers. These 378929-B21 compatible units work flawlessly in our blades. Fast, reliable, and very cost-effective. Satisfied.
Zero issues with these multi-mode SFPs. They provide a clean signal and reliable gigabit speeds. Ideal for cluster interconnects.
Seamless integration with HP hardware. These SX modules deliver consistent performance. Robust build quality and perfect for data center use.
Excellent value for our BladeSystem expansion. Recognized by Virtual Connect modules immediately. Steady throughput and zero signaling errors. Highly recommended.
Top-tier SX performance. These modules are well-built and provide a robust connection for our internal blade network. Very reliable.
The HP 378929-B21-C 1000BASE-SX SFP is a hot-pluggable gigabit transceiver designed for HP BladeSystem c-Class servers, providing reliable 1 Gbps fiber connectivity over multimode fiber.
This SFP module is fully compatible with HP BladeSystem c7000, c3000, and associated interconnect blades that feature SFP ports.
The 378929-B21-C uses 50/125 µm or 62.5/125 µm multimode fiber with LC duplex connectors for optimal optical performance.
It supports up to 550 meters on OM4 fiber, 275 meters on OM3 fiber, and 220 meters on OM2 multimode fiber at 1 Gbps.
The module operates at an 850 nm VCSEL wavelength, ensuring compatibility with industry-standard multimode optics.
Yes. The 1000BASE-SX SFP is hot-swappable, allowing module insertion or removal without powering down the server or switch.
This module supports IEEE 802.3z 1000 Mbps (1 Gbps) full-duplex operation over multimode fiber.
While it meets IEEE 802.3z standards and often interoperates with third-party equipment, we recommend using it in HP BladeSystem environments for guaranteed compatibility.
1. Power on or leave the system running. 2. Align the SFP module with the port. 3. Slide in until the latch clicks. 4. Confirm link LEDs illuminate.
Use HP Onboard Administrator or CLI (e.g., show interface transceiver) to check transceiver status, diagnostics, and link LEDs for an active connection.
Verify fiber polarity, clean LC connectors, ensure correct fiber type, reseat the SFP, and confirm remote device configuration matches 1000BASE-SX settings.
Operating temperature: 0 °C to 70 °C; storage: –40 °C to 85 °C; relative humidity: 5%–85% non-condensing.
Yes. It is RoHS-compliant and meets WEEE and other regional environmental regulations for hazardous substances.
It complies with IEEE 802.3z, SFP Multi-Source Agreement (MSA), and HP’s transceiver interoperability standards.
HP offers a one-year limited warranty and full access to HP support services, including firmware updates and global service coverage.
Choose 1000BASE-SX for multimode fiber up to 550 m; select 1000BASE-LX for single-mode fiber applications up to 10 km.
Yes. BladeSystem interconnect ports support mixed SFP modules but ensure each port’s configuration matches the installed transceiver type and speed.