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HP 647594-B21 331T 4 PORT ETHERNET ADAPTER View larger
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HP 647594-B21 331T 4 PORT Networking Adapters

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Quad‑port 1 GbE PCIe adapter optimized for virtualization and consolidation
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Detailed Specifications

HP 647594-B21

Ethernet 1 Gb 4‑Port 331T Network Adapter

The HP 647594‑B21 Ethernet 1 Gb 4‑Port 331T Adapter offers ultra-efficient, high-density connectivity via four RJ‑45 Gigabit ports on a single PCIe card. Engineered for environments requiring server consolidation, virtualization, or network segmentation, it provides full line‑rate speeds across all four ports—totaling up to 8 Gb/s aggregate throughput. With advanced features like jumbo frames, TCP checksum offload, VLAN tagging, and IEEE 1588 support, it is ideal for ProLiant Gen8/Gen9 servers. Its compact form factor includes both full‑height and low‑profile brackets and low-power Broadcom BCM5719 silicon for superior reliability and energy efficiency.

Features

Designed for today’s virtualized and I/O‑dense workloads, this quad‑port adapter delivers robust performance on a PCIe 2.0 x4 interface compatible with x4/x8/x16 slots. It supports full Duplex Gigabit at each port, enabling seamless segmentation or redundancy within tight server I/O budgets. The card supports VLAN tagging, large send/receive offloads, MSI‑X interrupts, jumbo frames up to 9K MTU, and precision time protocol (IEEE 1588/802.1AS), making it optimized for virtual environments. It also integrates HP Sea of Sensors 3D thermal monitoring for efficient fan control. Hot‑plugging isn't applicable, but drivers for common operating systems—including Windows, Linux, VMware—simplify deployment. PCI slot utilization is minimized while delivering dense connectivity, making the adapter ideal for virtualization, SAN connectivity segmentation, or security-separated lanes in data center edge or blades.

Advanced Options

Engineered for virtualized workloads, the 331T adapter provides stable, high-throughput connectivity with minimal CPU overhead. Its Broadcom BCM5719 chipset ensures efficient packet processing, supported by MSI‑X and offloading for improved multicore performance. Jumbo frame capability enhances throughput for backup/storage traffic, while IEEE 1588 timing support ensures precise synchronization.

Product Key Features

  •  Four 1 GbE RJ‑45 ports delivering 8 Gb/s aggregate throughput

  • PCIe 2.0 x4 interface, compatible with x4/x8/x16 slots

  • Advanced offloads: LSO/TSO, checksum, jumbo frames, VLAN tagging

  • IEEE 1588/802.1AS PTP support for precise time sync

  • MSI‑X interrupt support and virtualization optimizations (VMQ, NetQueue)

  •  Includes full‑height and low‑profile brackets for flexible installation

Reliability & Performance

Thermal management is refined using HP Sea of Sensors 3D technology, directing fan speed where needed and conserving energy. The adapter maintains full line-rate operation across all four ports, making it reliable for server consolidation and segmentation tasks. Fully tested for ProLiant Gen8/Gen9 servers, it guarantees compatibility and long-term reliability in production environments.

Key Features :

  • 4 × 10/100/1000Base‑T RJ‑45 ports

  • PCIe 2.0 x4 interface (backward compatible with x8/x16 slots)

  • Support for jumbo frames (up to 9K MTU)

  • TCP/IP offloading and large send/receive offload

  • VLAN tagging (IEEE 802.1Q) and MSI‑X support

  • IEEE 1588/802.1AS precision time protocol support

  • Virtualization enhancements: VMware NetQueue, Microsoft VMQ

  • Low‑profile and full-height bracket included

  • Supports PXE boot and energy-efficient Ethernet (802.3az)

  • Compatible with HP ProLiant Gen8/Gen9 servers

SpecificationDetails
Model Number 647594‑B21
Product Type 1 GbE Quad-Port Ethernet Network Adapter
Ports 4 × RJ‑45 (10/100/1000Base‑T)
Aggregate Throughput 8 Gb/s full duplex
Bus Interface PCIe 2.0 x4 (compatible with x4/x8/x16 slots)
Chipset Broadcom BCM5719
On-board Memory 4 Mbit
Offloading & Virtualization LSO/TSO, checksum offload, VLAN, NetQueue, VMQ, MSI‑X
Jumbo Frame Support Up to 9,000-byte MTU
Time Sync Support IEEE 1588 / 802.1AS PTP
Brackets Included Full-height and low-profile
Power Consumption ~4.3 W (max)
Cable Distance Up to 100 m (Category‑5/5e/6 UTP)
Operating Temperature 0 °C to 55 °C
Supported Servers ProLiant DL/ML Gen8 & Gen9 models
Compliance IEEE 802.1Q, 802.3az, 802.3ad, 802.3x, PXE

  • All packages are shipped same day if the order is placed before 3PM CST

    We use UPS/FedEx to ship the packages with different service levels offered by UPS/FedEx

    Overnight Shipping take 1 business day
    Expedited Shipping take about 2-3 business days
    Ground shipping take about 3-5 business days

    You can select the desired service level at Checkout and we will make sure the package is shipped as per the selected service level.

  • We Accept

    i) PayPal
    ii) All Credit & Debit Cards
    iii) Purchase Orders
    iv) Check
    v) Bank Transfer/ACH/Wire Transfer

    To process the order through Paypal/CC, you can simply checkout and process the payment.

    If you want to issue us Purchase Order/Check/Bank Transfer, Please contact us at the following details

    Call: 469.458.9636
    Email: sales@dcsupplies.net

  • If you have any queries, please contact us at the following details and we will be happy to help

    Call
    469.458.9636
    469.458.9638

    Email
    sales@dcsupplies.net

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