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PartsTable / NETWORK / 42C1780
42C1780 ✓ Verified by PartsTable
IBM · NETWORK · 1GBE_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

IBM NIC 1GbE RJ-45 2-P PCI-E-2.0x4 NetXtreme II 1000 CNTLR. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-619-3757, 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→ 1GBE_NIC→ 42C1780
NSN: 5998-01-619-3757
FSC: 5998 — CIRCUIT CARD ASSEMBLY
CAGE: 30874 — INTERNATIONAL BUSINESS MACHINES CORPORATION DBA IBM (USA)
SPECIFICATIONS
Part Number42C1780
ManufacturerIBM
Interface1GbE
Capacity1GB
NSN5998-01-619-3757
COMPONENT DIAGRAM
NIC CTRL PHY 0 PHY 1 ROM VRM 1GbE 1GbE LINK ACT PCIe x8 ~167 mm NETWORK ADAPTER | 2-PORT 10GbE | 1GbE | Full Height PCIe x8 | Link/Activity LEDs | PXE boot ROM TITLE NIC ADAPTER PN 42C1780 MFR IBM IBM NIC 1GbE RJ-45 2-P PCI-E-2.0x4 NetXt
KEY FEATURES
•
1GbE Interface
•
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
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.750 INCHES NOMINAL IN
OVERALL HEIGHT4.750 INCHES NOMINAL IN
END ITEM IDENTIFICATIONCOMPUTER
PART NAME ASSIGNED BY CONTROLLING AGENCYEXPRESS DUAL PORT ETHERNET ADAPTER
OVERALL WIDTH4.750 INCHES NOMINAL IN
OVERALL LENGTH0.750 INCHES NOMINAL IN
OVERALL HEIGHT4.750 INCHES NOMINAL IN
END ITEM IDENTIFICATIONCOMPUTER
PART NAME ASSIGNED BY CONTROLLING AGENCYEXPRESS DUAL PORT ETHERNET ADAPTER
OVERALL WIDTH4.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
42C1781Compatible
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - P/N
compatible
42C1782Compatible
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - FRU
compatible
42C1783Compatible
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - SBB
compatible
49Y4204Compatible
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - FRU
compatible
49Y4205Compatible
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - P/N
compatible
49Y7946Compatible
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - P/N
compatible
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 7
42C1781SUBSTITUTE
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - Option
IBM
42C1782SUBSTITUTE
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - Option
IBM
42C1783SUBSTITUTE
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - Option
IBM
49Y4204SUBSTITUTE
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - Option
IBM
49Y4205SUBSTITUTE
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - Option
IBM
49Y7946SUBSTITUTE
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - Option
IBM
49Y7947SUBSTITUTE
IBM NIC 1GbE RJ-45 2-Port PCI-E-2.0x4 NetXtreme II 1000 Express Controller (BCM5709C) - Option
IBM
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FREQUENTLY ASKED QUESTIONS
What is 42C1780?
42C1780 is a IBM NIC 1GbE RJ-45 2-P PCI-E-2.0x4 NetXtreme II 1000 CNTLR manufactured by IBM. It is classified as a NETWORK (1GBE_NIC).
What parts can replace 42C1780?
There are 7 known substitutes for 42C1780: 42C1781, 42C1782, 42C1783 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 42C1780?
42C1780 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5998-01-619-3757. 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