AddOn 42C1780-AO Dual Port Gigabit Ethernet Card - PCIe 2.0 x 4 - Intel 82576 Controller - 10/100/1000Base-T
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Product Features
Technical Overview
This network interface card utilizes the PCI Express 2.0 x4 interface, delivering up to 2000 MB/s bandwidth for high-throughput network traffic. The Intel 82576 chipset provides hardware acceleration for TCP/IP offloading, reducing CPU overhead during intensive network operations.
The card supports twisted pair cabling with standard RJ-45 connectors, maintaining reliable connections up to 100 meters. Each port independently negotiates 10 Mbps, 100 Mbps, or 1000 Mbps speeds based on network infrastructure capabilities.
Relevant factors for this section include Chipset Manufacturer, Chipset Model, Host Interface, Total Number of Ports. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
A strong technical summary explains how the product's interfaces, hardware profile, and operating characteristics work together in real deployment. Buyers often need this context to confirm compatibility with existing devices, expected performance in daily use, and whether installation will be straightforward for IT staff or end users.
Key Product Advantages
The AddOn 42C1780-AO combines dual-port density with enterprise reliability in a cost-effective expansion card solution. The Intel controller ensures compatibility with major server operating systems and delivers consistent performance under sustained network loads.
Slot Efficiency
Two independent Gigabit Ethernet ports operate through a single PCIe x4 slot, maximizing expansion slot utilization in space-constrained server environments.
- Conserves PCIe slots
- Reduces hardware footprint
- Simplifies cable management
Enterprise Reliability
The Intel 82576 chipset includes advanced features like VLAN tagging, teaming support, and interrupt moderation for stable server networking.
- Hardware-accelerated processing
- Advanced traffic management
- Proven server compatibility
Cost-Effective Connectivity
Utilizes standard twisted pair cabling rather than specialized fiber optics, maintaining high performance while minimizing infrastructure costs.
- Standard CAT5e/CAT6 cables
- No specialized transceivers
- 100-meter reach capability
Deployment / Use Cases
This dual-port Gigabit Ethernet card is engineered for server environments where reliable network connectivity and expansion flexibility are critical. The card's server designation indicates optimization for 24/7 operation in data center and enterprise settings.
Typical deployments include adding secondary network interfaces for virtualization hosts, creating bonded connections for increased bandwidth, establishing separate management and data networks, or providing network redundancy through failover configurations. The included half-height and full-height brackets accommodate both standard server chassis and compact form factor systems.
Relevant factors for this section include Chipset Manufacturer, Chipset Model, Host Interface, Total Number of Ports. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Server Network Expansion
Add dedicated network interfaces for virtual machines, storage networks, or backup traffic without consuming multiple expansion slots.
Network Redundancy
Configure port teaming or failover to maintain network availability during cable or switch failures in critical server applications.
Physical Profile
The card measures 4.20" in height, 0.80" in width, and 4.70" in depth, with an approximate weight of 8 ounces. This compact form factor fits standard PCIe slots while the low-profile design minimizes airflow disruption in densely packed server racks. Both half-height and full-height mounting brackets are included to accommodate various chassis configurations.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 4.20" (106.68 mm), 0.80" (20.32 mm), 4.70" (119.38 mm), 8 oz (226.80 g). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 0.80" (20.32 mm)
- Depth
- 4.70" (119.38 mm)
- Height
- 4.20" (106.68 mm)
- Weight
- 8 oz (226.80 g)
What's in the Box
The package includes the complete network interface card solution ready for installation in server environments.
Highlights
- Dual Gigabit Ethernet ports through a single PCIe 2.0 x4 slot
- Intel 82576 controller for enterprise-grade reliability and performance
- 10/100/1000Base-T auto-negotiation up to 1000 Mbps per port
- Supports twisted pair cabling with 100-meter maximum distance
- Includes both half-height and full-height mounting brackets
- 2000 MB/s interface bandwidth for high-throughput networking
- Server-optimized design for 24/7 operation
- Lifetime limited warranty for long-term deployment confidence
Specifications
| Specifications | |
|---|---|
| Manufacturer | AddOn |
| Manufacturer Part Number | 42C1780-AO |
| Brand Name | AddOn |
| Product Name | Gigabit Ethernet Card |
| Packaged Quantity | 1 |
| Product Type | Gigabit Ethernet Card |
| Technical Information | |
| Chipset Manufacturer | Intel |
| Chipset Model | 82576 |
| Interfaces/Ports | |
| Host Interface | PCI Express 2.0 x4 |
| Total Number of Ports | 2 |
| Number of Network (RJ-45) Ports | 2 |
| Media & Performance | |
| Media Type Supported | Twisted Pair |
| Network & Communication | |
| Network Technology | 10/100/1000Base-T |
| Physical Characteristics | |
| Form Factor | Plug-in Card |
| Height | 4.20" (106.68 mm) |
| Width | 0.80" (20.32 mm) |
| Depth | 4.70" (119.38 mm) |
| Weight (Approximate) | 8 oz (226.80 g) |
| Miscellaneous | |
| Package Contents | Gigabit Ethernet Card Half-height and full-height brackets |
| Device Supported | Server |
| Country of Origin | China |
| Warranty | |
| Limited Warranty | Lifetime |
FAQ
What type of expansion slot does this network card require?
The AddOn 42C1780-AO requires a PCI Express 2.0 x4 slot or any larger PCIe slot (x8, x16) that maintains backward compatibility. The card will physically fit in standard PCIe slots while utilizing the x4 interface bandwidth of up to 2000 MB/s for optimal network performance.
Can both ports on this card be used simultaneously?
Yes, both RJ-45 ports operate independently and can be used simultaneously for different network segments, aggregated bandwidth through teaming, or redundant failover configurations. Each port supports full Gigabit Ethernet speeds up to 1000 Mbps with auto-negotiation to lower speeds when connecting to older network equipment.
What is the maximum cable distance supported by this network card?
The card supports standard twisted pair Ethernet cabling (CAT5e, CAT6, or higher) up to 100 meters (approximately 328 feet) per the 10/100/1000Base-T specification. This distance applies to each port independently when using quality cabling and proper network infrastructure.
Does this card include mounting brackets for different chassis types?
Yes, the package includes both half-height (low-profile) and full-height mounting brackets, allowing installation in standard server chassis as well as compact form factor systems. The brackets are easily interchangeable to match your specific server enclosure requirements.
What type of warranty comes with this network interface card?
The AddOn 42C1780-AO includes a lifetime limited warranty, providing long-term coverage for this server-grade networking component. This warranty supports deployment in enterprise environments where network reliability and product longevity are essential considerations.
Is this network card compatible with virtualization platforms?
Yes, the Intel 82576 chipset is widely supported across major virtualization platforms including VMware ESXi, Microsoft Hyper-V, and various Linux-based hypervisors. The dual-port design is particularly useful for virtualization hosts, allowing dedicated interfaces for management, virtual machine traffic, storage networks, or live migration networks.
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