AddOn 378928-B21-AO SFP Module - 10/100/1000Base-T RJ-45 Copper Transceiver - TAA Compliant - HP Compatible
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Product Features
Technical Overview
This SFP module operates across the full 10/100/1000Base-T auto-negotiation spectrum, dynamically adjusting link speed to match connected device capabilities. It supports Gigabit Ethernet technology over twisted-pair media, providing a maximum data transfer rate of 1 Gbps for high-bandwidth applications.
The transceiver is engineered for stable operation in temperatures from 0°C to 70°C, ensuring reliability in varied environmental conditions. Its single-port RJ-45 interface delivers copper connectivity without requiring separate media converters, simplifying network architecture.
This section brings together practical product details such as Application/Usage, Total Number of Ports, Connector Type, Interfaces/Ports Details, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
This transceiver combines certified compatibility with robust performance features for dependable network expansion. It eliminates vendor lock-in while maintaining full interoperability with HP® equipment.
Guaranteed Compatibility
Programmed and tested to initialize and perform identically to the HP® 378928-B21 module, ensuring drop-in replacement without configuration changes.
- 100% HP® compatible
- Uniquely serialized
- Data-traffic tested
Standards Compliance
Adheres to Multi-Source Agreement (MSA) standards for seamless network integration and meets TAA requirements for government procurement.
- MSA compliant
- TAA compliant
- RoHS certified
Performance Assurance
Delivers full 10/100/1000Base-T throughput with auto-negotiation support, operating reliably across industrial temperature ranges.
- 1 Gbps data rate
- 0-70°C operating range
- Up to 100m reach
Deployment / Use Cases
This copper SFP transceiver is ideal for extending Gigabit Ethernet connectivity over existing twisted-pair infrastructure in various networking scenarios. It serves as a cost-effective solution for connecting switches, routers, and servers where fiber optic cabling is impractical or unnecessary.
Common applications include connecting network equipment in server racks, linking workgroup switches in office environments, and providing copper uplinks in mixed-media network designs. Its TAA compliance makes it suitable for government, education, and regulated industry deployments where sourcing requirements must be met.
Data Center Connectivity
Connect top-of-rack switches to servers using standard Cat5e/6 cabling, avoiding fiber conversion costs while maintaining Gigabit performance.
Office Network Expansion
Add copper ports to SFP-capable switches for connecting workstations, IP phones, and wireless access points over structured cabling.
Physical Profile
The transceiver features a compact SFP form factor measuring 2.75" wide × 4.75" deep × 1.20" high (69.85 × 120.65 × 30.48 mm), with a weight of approximately 6.4 oz (181.44 g). Its standardized dimensions ensure proper fit in any SFP slot, while the lightweight design minimizes stress on equipment connectors during installation and removal.
- Width
- 2.75" (69.85 mm)
- Depth
- 4.75" (120.65 mm)
- Height
- 1.20" (30.48 mm)
- Weight
- 6.40 oz (181.44 g)
Highlights
- 10/100/1000Base-T copper SFP transceiver with RJ-45 connector
- HP® 378928-B21 compatible with guaranteed 100% interoperability
- Supports up to 100m distance over twisted-pair cabling
- MSA compliant for seamless network integration
- Trade Agreements Act (TAA) compliant for government procurement
- Hot-pluggable design for easy installation and replacement
- Operates in 0°C to 70°C temperature range
- Lifetime warranty with quality assurance
Specifications
| Specifications | |
|---|---|
| Manufacturer | AddOn |
| Manufacturer Part Number | 378928-B21-AO |
| Brand Name | AddOn |
| Product Model | 378928-B21-AO |
| Product Name | 378928-B21-AO SFP Module |
| Product Type | SFP |
| Technical Information | |
| Application/Usage | Optical Network,Data Networking |
| Interfaces/Ports | |
| Total Number of Ports | 1 |
| Connector Type | RJ-45 |
| Interfaces/Ports Details | 1 x RJ-45 10/100/1000Base-T LAN |
| Media & Performance | |
| Media Type Supported | Twisted Pair |
| Ethernet Technology | Gigabit Ethernet |
| Network Technology | 10/100/1000Base-T |
| Maximum Data Transfer Rate | 1 |
| Physical Characteristics | |
| Height | 1.20" (30.48 mm) |
| Width | 2.75" (69.85 mm) |
| Depth | 4.75" (120.65 mm) |
| Weight (Approximate) | 6.40 oz (181.44 g) |
| Miscellaneous | |
| Compatibility | MSA Compliant |
| Country of Origin | United States |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) |
| Warranty | |
| Limited Warranty | Lifetime |
User Manual
FAQ
What is the maximum distance this SFP transceiver supports over copper?
This transceiver supports distances up to 100 meters (approximately 328 feet) over standard twisted-pair cabling such as Cat5e, Cat6, or higher categories. The reach is achieved through 10/100/1000Base-TX technology, providing reliable Gigabit Ethernet connectivity within typical office and data center cabling infrastructure.
Is this transceiver compatible with HP networking equipment?
Yes, the AddOn 378928-B21-AO is specifically programmed and tested as a fully compatible alternative to the HP® 378928-B21 SFP module. It undergoes data-traffic testing to ensure identical initialization and performance, guaranteeing 100% compatibility with HP switches, routers, and other equipment that accept the original module.
What does TAA compliance mean for this product?
TAA (Trade Agreements Act) compliance indicates this transceiver meets U.S. government procurement requirements for products originating from designated countries. This makes it suitable for federal, state, and local government contracts, as well as educational institutions and other organizations that must adhere to TAA sourcing regulations in their purchasing.
Does this SFP module support auto-negotiation?
Yes, the transceiver fully supports 10/100/1000Base-T auto-negotiation, allowing it to automatically detect and match the speed of connected devices. This ensures optimal performance whether connecting to Gigabit, Fast Ethernet, or standard Ethernet equipment without manual configuration.
What is the operating temperature range for this transceiver?
The module operates reliably in temperatures from 0°C to 70°C (32°F to 158°F), making it suitable for various environmental conditions found in data centers, wiring closets, and industrial networking applications. This range ensures stable performance in both climate-controlled and less-regulated installations.
Is this transceiver hot-pluggable?
Yes, this SFP module features hot-pluggable design, allowing installation or removal without powering down the networking equipment. This enables maintenance, upgrades, and replacements during normal operation, minimizing network downtime and simplifying deployment in live environments.
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