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Technical Data Sheet
817749-B21 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The 817749-B21 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6099-01-726-6703, 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
817749-B21
NSN: 6099-01-726-6703
FSC: 6099 — PANEL,PATCHING,FIBER OPTIC
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
Part Number817749-B21
NSN6099-01-726-6703
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 817749-B21 TITLE COMPONENT PN 817749-B21 MFR 817749-B21
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES10 TO 25 GIGABYTE, 2-PORT
PART NAME ASSIGNED BY CONTROLLING AGENCYETHERNET ADAPTER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
817749R-B21Interchangeable
Same NIIN cross-reference
interchangeable
840139-001Compatible
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx)
compatible
817747-001Compatible
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx)
compatible
817750-B21Compatible
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx) FIO
compatible
P18461-B21Compatible
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx) for DX Servers
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
THIS PART SUBSTITUTES FOR 4
P18461-B21SUBSTITUTE
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx)
HPE
817747-001SUBSTITUTE
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx)
HPE
817750-B21SUBSTITUTE
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx)
HPE
840139-001SUBSTITUTE
HP NIC 640FLB-SFP28 10/25GbE 2-Port PCI-E-3.0x8 Ethernet FlexibleLOM (Mellanox ConnectX-4 Lx)
HPE
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FREQUENTLY ASKED QUESTIONS
What is 817749-B21?
817749-B21 is a 817749-B21.
What parts can replace 817749-B21?
There are 5 known substitutes for 817749-B21: 817749R-B21, 840139-001, 817747-001 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 817749-B21?
817749-B21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6099-01-726-6703. This indicates validated use in U.S. government and defense supply chains.
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