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766491-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

HPE Flex Fabric 10Gb 2P 536FLB FIO 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 5998-01-647-0032, 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 766491-B21
NSN: 5998-01-647-0032
FSC: 5998 — CIRCUIT CARD ASSEMBLY
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Part Number766491-B21
ManufacturerHP
Capacity10GB
NSN5998-01-647-0032
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 766491-B21 MFR HP HPE Flex Fabric 10Gb 2P 536FLB FIO Adapt
KEY FEATURES
10GB Capacity
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYHP FLEXFABRIC 10GB 2 PORT 536FLB FIO ADAPTER GB
END ITEM IDENTIFICATIONHP BLADE SYSTEM C-CLASS GEN9 SERVER
PART NAME ASSIGNED BY CONTROLLING AGENCYHP FLEXFABRIC 10GB 2 PORT 536FLB FIO ADAPTER GB
END ITEM IDENTIFICATIONHP BLADE SYSTEM C-CLASS GEN9 SERVER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
766490-B21Compatible
HP NIC 536FLR-SFP+ 10GbE 2-Port PCI-E-3.0x8 FlexFabric FlexibleLOM (QLogic 57840S)
compatible
768080-001Compatible
HP NIC 536FLR-SFP+ 10GbE 2-Port PCI-E-3.0x8 FlexFabric FlexibleLOM (QLogic 57840S)
compatible
766488-001Compatible
HP NIC 536FLR-SFP+ 10GbE 2-Port PCI-E-3.0x8 FlexFabric FlexibleLOM (QLogic 57840S)
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
766488-001SUBSTITUTE
HP NIC 536FLR-SFP+ 10GbE 2-Port PCI-E-3.0x8 FlexFabric FlexibleLOM (QLogic 57840S) FIO
HPE
766490-B21SUBSTITUTE
HP NIC 536FLR-SFP+ 10GbE 2-Port PCI-E-3.0x8 FlexFabric FlexibleLOM (QLogic 57840S) FIO
HPE
768080-001SUBSTITUTE
HP NIC 536FLR-SFP+ 10GbE 2-Port PCI-E-3.0x8 FlexFabric FlexibleLOM (QLogic 57840S) FIO
HPE
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FREQUENTLY ASKED QUESTIONS
What is 766491-B21?
766491-B21 is a HPE Flex Fabric 10Gb 2P 536FLB FIO Adapter manufactured by HP. It is classified as a NETWORK (10GBE_NIC).
What parts can replace 766491-B21?
There are 3 known substitutes for 766491-B21: 766490-B21, 768080-001, 766488-001. Substitute compatibility should be verified for your specific system.
What is the NSN for 766491-B21?
766491-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-647-0032. This indicates validated use in U.S. government and defense supply chains.
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