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HP 412648-B21 NC360T PCI-Express Dual Port Gigabit Adapter — main product image
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HP 412648-B21 NC360T PCI-Express Dual Port Gigabit Adapter

★★★★★4.1 (106 reviews)

Dual Gigabit ports on a single PCIe card — cut CPU overhead and double your server's network throughput in one slot.

$32.00*
✓ In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The HP NC360T is a dual-port Gigabit Ethernet adapter built on the Intel 82571EB chipset and designed to slot into PCI Express v1.0a-compliant servers. "Dual-port Gigabit" means two independent 1 Gbps interfaces on a single expansion card — useful for separating traffic types (management vs. data), bonding ports via LACP for 2 Gbps aggregate throughput, or simply adding network interfaces to a server with saturated onboard ports. The hardware TCP Segmentation Offload and Large Receive Offload built into the 82571EB chipset are the key performance differentiators: they shift network processing from software on the host CPU to dedicated silicon on the card, reducing CPU overhead on high-throughput workloads by a measurable margin.

This card is built for server infrastructure, not consumer or workstation use. Its value proposition is straightforward: reliable, well-documented Gigabit connectivity backed by Intel's most stable server NIC chipset, in an HP OEM form factor validated for ProLiant server deployment. ACPI Wake-on-LAN support, auto-sensing speed and duplex negotiation, and remote boot capability round out the enterprise feature set. It's best suited for server administrators expanding network capacity on existing hardware, replacing failed onboard NICs, or building out dedicated traffic segregation in a managed rack environment. For any workload requiring 10GbE or higher throughput, this card's bandwidth ceiling is the binding constraint.

Key Features

End-to-end Gigabit solution

Better network performance by alleviating congestion and removing bottlenecks

High-performance connectivity solution for your LAN

Significantly reduces CPU utilization and increases throughput

Allows Lower Power Consumption, Remote Wake And Remote Booting

Pci-E V1.0A Compliant

Senses and configures itself to the speed and duplex type of the attached device

Support For Acpi Wol (Wake On Lan)

Specifications

Interface
PCI Express v1.0a
Ports
2x Gigabit Ethernet (RJ-45)
Chipset
Intel 82571EB
Speed
10/100/1000 Mbps (auto-sensing)
Wake-on-LAN
ACPI WOL supported
Remote Boot
Supported
Model
HP NC360T (412648-B21)

Pros & Cons

👍 Pros

  • Dual Intel 82571EB ports deliver proven, enterprise-class Gigabit throughput with hardware offloading that measurably reduces CPU cycles on busy servers
  • Hardware TCP offload (TSO/LRO) frees CPU resources that would otherwise be consumed by network stack processing — directly improving application headroom
  • ACPI Wake-on-LAN support enables remote boot and power management across both ports without additional hardware or cabling
  • Auto-negotiation to device speed and duplex type eliminates manual configuration errors when connecting to mixed 10/100/1000 network environments
  • Mature Intel 82571EB driver support across Windows Server, Linux (e1000e), and VMware ESXi means no exotic firmware or compatibility surprises during deployment

👎 Cons

  • PCIe v1.0a compliance means this is a legacy-generation card — it lacks PCIe Gen 2/3 features and is not designed for 10GbE or higher workloads
  • The card occupies a full PCIe slot for Gigabit speeds that most modern server boards already provide onboard, making its value case narrow to specific NIC expansion scenarios
  • No SR-IOV support limits its usefulness in dense virtualization environments where per-VM NIC passthrough is required
  • As an HP OEM part, sourcing replacement units or warranty service outside HP server ecosystems may be complicated
  • Heat dissipation relies entirely on passive airflow — in poorly ventilated rack enclosures with restricted airflow, thermal throttling is possible under sustained dual-port load

Frequently Asked Questions

The NC360T is built on the Intel 82571EB chipset — one of the most widely supported server NIC chipsets ever made. This means mature, stable drivers across Windows Server, Linux (e1000e module), and VMware ESXi, with no exotic firmware requirements. If driver reliability is your primary concern, Intel-based NICs at this tier are the benchmark.
Yes — PCIe is backward and forward compatible in terms of slot size. The NC360T will operate in a PCIe x4, x8, or x16 slot at full PCIe Gen 1 bandwidth. The card only requires PCIe x4 electrical bandwidth to run both Gigabit ports simultaneously at line rate, so slot size is not a bottleneck here.
The NC360T offloads TCP/IP processing via hardware TCP Segmentation Offload (TSO) and Large Receive Offload (LRO). In high-throughput server scenarios, this can reduce NIC-related CPU utilization by 30–50% compared to software-processed network stacks — freeing cycles for application workloads.
Yes — ACPI Wake-on-LAN is supported via the PCIe bus without requiring a dedicated WOL header cable. The card uses the PCIe power rails to maintain WOL standby state. Ensure your system BIOS has PCIe WOL enabled for this to function correctly.
Yes — both ports support IEEE 802.3ad LACP link aggregation when connected to a managed switch that supports LACP. This allows you to bond both Gigabit ports for up to 2 Gbps aggregate throughput with failover capability, controlled at the OS or hypervisor level.

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