P51178-B21 - HPE BCM 5719 1GB 4P BASE-T Adapter

HPE P51178-B21 — Broadcom BCM5719 1Gb 4-Port BASE-T Ethernet PCIe Adapter

What it is

P51178-B21 is an HPE 4-port Gigabit Ethernet network adapter based on the Broadcom BCM5719 chipset. It provides four 1 GbE BASE-T RJ-45 ports and connects to servers via a PCI Express (PCIe) slot, adding reliable Gigabit LAN connectivity to HPE servers that need multiple NIC ports.

Why buyers pick P51178-B21 (plain English)

Multiple Gigabit ports in one card: Four 1 GbE ports let you consolidate networking without using multiple adapters.

Broadcom reliability: Broadcom’s BCM5719 is a mature, widely supported enterprise NIC chipset.

PCIe form factor: Fits standard PCIe slots in servers for easy upgrade or expansion.

Ideal for 1 GbE infrastructure: Works seamlessly with existing gigabit switching and uplinks without extra optics.

60-second spec box (P51178-B21)

Adapter chipset

• Broadcom BCM5719

Ports / speed

• 4 × 1 GbE BASE-T RJ-45

Interface

• PCI Express (PCIe) network adapter

Use case

• Add multiple 1 GbE connections to servers

• Uplinks to gigabit access/core switches

• Situations where onboard NICs are insufficient

Compatible media

• Standard copper cabling (Cat5e / Cat6)

Where it fits (and when to choose something else)

Perfect for:

• Servers that need multiple 1 GbE ports

• 1 GbE network environments

• Virtualization hosts with several VLAN uplinks

Choose something else if:

• You need 10 GbE or faster → use SFP+ / 10GBASE-T / 25G adapters

• You need fiber uplinks → choose fiber NICs

TL;DR

P51178-B21 is an HPE Broadcom BCM5719 4-port 1GbE BASE-T PCIe adapter — a reliable quad-port Gigabit Ethernet card for servers requiring multiple 1 Gb connections.