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PartsTable / NETWORK / 684212-B21
684212-B21 ✓ Verified by PartsTable
HP · NETWORK · 10GBE_NIC
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 FLEXFABRIC 10GB 2-PORT 554FLB FIO NETWORK ADAPTER

HP FLEXFABRIC 10GB 2-PORT 554FLB FIO NETWORK ADAPTER. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7021-01-615-8858, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
NETWORK→ 10GBE_NIC→ 684212-B21
NSN: 7021-01-615-8858
FSC: 7021 — COMPUTER,DIGITAL
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Part Number684212-B21
ManufacturerHP
Capacity10GB
NSN7021-01-615-8858
COMPONENT DIAGRAM
NIC CTRL PHY 0 PHY 1 ROM VRM SFP+ SFP+ LINK ACT PCIe x8 ~167 mm NETWORK ADAPTER | 2-PORT 10GbE | SFP+ | Full Height PCIe x8 | Link/Activity LEDs | PXE boot ROM TITLE NIC ADAPTER PN 684212-B21 MFR HP HP FlexFabric 10GB 2-Port 554FLB Fio Net
KEY FEATURES
•
10GB Capacity
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
647586-B21Compatible
HP NIC 554FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 FlexFabric BL-c FlexibleLOM (Emulex BE3)
compatible
649940-001Compatible
HP NIC 554FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 FlexFabric BL-c FlexibleLOM (Emulex BE3)
compatible
647584-001Compatible
HP NIC 554FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 FlexFabric BL-c FlexibleLOM (Emulex BE3)
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
THIS PART SUBSTITUTES FOR 3
647584-001SUBSTITUTE
HP NIC 554FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 FlexFabric BL-c FlexibleLOM (Emulex BE3) FIO
HPE
647586-B21SUBSTITUTE
HP NIC 554FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 FlexFabric BL-c FlexibleLOM (Emulex BE3) FIO
HPE
649940-001SUBSTITUTE
HP NIC 554FLB 10GbE 2-Port PCI-E-2.0x8 Flex-10 FlexFabric BL-c FlexibleLOM (Emulex BE3) FIO
HPE
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FREQUENTLY ASKED QUESTIONS
What is 684212-B21?
684212-B21 is a HP FlexFabric 10GB 2-Port 554FLB Fio Network Adapter manufactured by HP. It is classified as a NETWORK (10GBE_NIC).
What parts can replace 684212-B21?
There are 3 known substitutes for 684212-B21: 647586-B21, 649940-001, 647584-001. Substitute compatibility should be verified for your specific system.
What is the NSN for 684212-B21?
684212-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7021-01-615-8858. This indicates validated use in U.S. government and defense supply chains.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026