P51178-B21 is the HPE option part number for Broadcom BCM5719 Ethernet 1Gb 4-port BASE-T Adapter for HPE. It is a plug-in card built on a single Broadcom BCM5719 controller, presenting four RJ-45 Gigabit Ethernet ports over a PCI Express 2.0 x4 host interface. Each port supports 10Base-T, 100Base-TX and 1000Base-T copper cabling at up to 1 Gb/s. Offload and boot features include TCP Segmentation Offload, Receive Side Scaling, flow control, IPv4 and IPv6 support, ACPI, UEFI and legacy BIOS PXE boot, and limited root of trust. Operational power draw is 5.78 W, which keeps slot power budgeting straightforward when adding port density to a configuration.
HPE Option Part #: P51178-B21
HPE Spare Part #: P51304-001
PRODUCT SPECIFICATIONS FOR P51178-B21:
- Device Type: Network adapter
- Form Factor: Plug-in card
- Interface (Bus) Type: PCI Express 2.0 x4
- Ports: Gigabit Ethernet x 4
- Connectivity Technology: Wired
- Cabling Type: Ethernet 10Base-T, Ethernet 100Base-TX, Ethernet 1000Base-T
- Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet
- Data Transfer Rate: 1 Gbps
- Features: Flow control, ACPI support, IPv6 support, IPv4 support, PXE support, Receive Side Scaling (RSS), UEFI support, TCP Segmentation Offload (TSO), UEFI PXE Boot, legacy BIOS PXE Boot, Limited root of trust
- Processor: 1 x Broadcom BCM5719
- Interfaces: 4 x Ethernet 1000 - RJ-45
- Power Consumption Operational: 5.78 Watt
COMPATIBLE WITH:
PROLIANT DL SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS ABOUT P51178-B21
What is the difference between P51178-B21 and P51304-001?
They are the same physical adapter under two HPE part-numbering schemes. P51178-B21, the subject of this page, is the option part number, the orderable number used when configuring or adding the adapter to a server. P51304-001 is the spare part number, which is how the same board is identified for service replacement. The hardware, controller, port count and specifications are identical between the two.
What slot and bus does this adapter require?
The adapter uses a PCI Express 2.0 x4 interface and installs as a standard plug-in card. When planning a configuration, confirm the target slot provides at least a x4 electrical connection and the physical space for a card carrying four RJ-45 connectors. Operational power consumption is 5.78 W, so it adds minimal load to the slot power budget compared with higher-speed network options.
Which servers is P51178-B21 supported in?
Supported platforms include the HPE ProLiant DL380 Gen11, DL385 Gen11, DL365 Gen11, DL345 Gen11 and DL325 Gen11, plus the DL380 Gen10 Plus, DL360 Gen10 Plus, DL365 Gen10 Plus, DL345 Gen10 Plus, DL385 Gen10 Plus v2 and DL325 Gen10 Plus v2. Slot availability varies by chassis and riser configuration, so verify the specific riser and slot assignment for your build.
What network speeds and cabling does it support?
Each of the four ports is an RJ-45 copper interface running at up to 1 Gb/s. Cabling support covers Ethernet 10Base-T, 100Base-TX and 1000Base-T, with data link protocol support for Ethernet, Fast Ethernet and Gigabit Ethernet. That makes the card suitable for mixed-speed copper environments where some links still terminate on 10/100 infrastructure alongside Gigabit switching.
Does the adapter support network boot and offload features?
Yes. It supports UEFI PXE boot and legacy BIOS PXE boot, along with general PXE, UEFI and ACPI support, so it can be used for network-based provisioning. Performance and protocol features include TCP Segmentation Offload, Receive Side Scaling for distributing receive processing across CPU cores, flow control, and both IPv4 and IPv6 support. The adapter also implements limited root of trust.
HPE PARTSURFER INFO FOR P51178-B21
| Spare PN | Description | |
|---|---|---|
| P51304-001 | SPS-PCA NIC 4p 1Gb BASE-T BCM 5719 Opn |
Last Updated: 2026-06-22
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