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647594-B21 ✓ Verified by PartsTable
HP · ACCESSORY · ADAPTER
WHAT YOU NEED TO KNOW
RJ45 = copper (needs CAT6) | SFP+ = fiber (needs transceiver) FLR = FlexibleLOM (HPE integrated) — NOT standard PCIe
Bracket height MUST match chassis — Full Height (2U) vs Low Profile (1U)
PRODUCT OVERVIEW
HP ETHERNET 1GB 4-PORT BASE-T BCM5719 ADAPTER

Enterprise and mid-market customers requiring low power, high port density 1GbE network adapters for virtualization and server consolidation.<br><br>The HP Ethernet 1Gb 4-Port 331T Adapter features the next generation of Ethernet integration, offering a single chip solution that reduces power requirements and optimizes I/O slot utilization. It delivers full line-rate performance across all ports with low power consumption.<br><br>The HP 331T is ideal for virtualization, security, server consolidation, network segmentation, and other applications requiring maximum throughput and port density. The total aggregate throughput of 8Gb meets the needs of customers desiring high bandwidth.<br><br>The HP 331T supports advanced features such as Large Send and Receive offload capability, TCP checksum and segmentation, VLAN tagging, MSI-X, jumbo frames, IEEE 1588, and virtualization features such as VMware NetQueue and Microsoft VMQ.

Support for HP Sea of Sensors 3D Technology enhances server perf This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5935-01-615-6296, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
ACCESSORY ADAPTER 647594-B21
NSN: 5935-01-615-6296
FSC: 5935
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Part Number647594-B21
ManufacturerHP
Capacity1GB
NSN5935-01-615-6296
COMPONENT DIAGRAM
NIC CTRL PHY 0 PHY 1 ROM VRM SFP+ SFP+ SFP+ SFP+ LINK ACT PCIe x8 ~167 mm NETWORK ADAPTER | 4-PORT 10GbE | SFP+ | Full Height PCIe x8 | Link/Activity LEDs | PXE boot ROM TITLE NIC ADAPTER PN 647594-B21 MFR HP HP Ethernet 1GB 4-Port Base-T BCM5719 Ad
KEY FEATURES
1GB Capacity
TYPICAL APPLICATIONS
  • Data center top-of-rack switching
  • High-speed server interconnects (10G/25G/40G/100G)
  • Storage network fabric (iSCSI, FCoE)
  • Campus and branch network infrastructure
  • Firewall and security appliance connectivity
  • WAN edge and SD-WAN deployments
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
649871-001Interchangeable
HP Ethernet 1GB 4-Port Base-T BCM5719 Adapter
interchangeable
647592-001Compatible
HP NIC 331T 1GbE RJ-45 4-port PCI-E-2.0x4 Ethernet Controller (Broadcom BCM5719)
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
THIS PART SUBSTITUTES FOR 2
647592-001SUBSTITUTE
HP NIC 331T 1GbE RJ-45 4-port PCI-E-2.0x4 Ethernet Controller (Broadcom BCM5719)
HPE
649871-001SUBSTITUTE
HP NIC 331T 1GbE RJ-45 4-port PCI-E-2.0x4 Ethernet Controller (Broadcom BCM5719)
HPE
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FREQUENTLY ASKED QUESTIONS
What is 647594-B21?
647594-B21 is a HP Ethernet 1GB 4-Port Base-T BCM5719 Adapter manufactured by HP. It is classified as a ACCESSORY (ADAPTER).
What parts can replace 647594-B21?
There are 2 known substitutes for 647594-B21: 649871-001, 647592-001. Substitute compatibility should be verified for your specific system.
What is the NSN for 647594-B21?
647594-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5935-01-615-6296. This indicates validated use in U.S. government and defense supply chains.
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