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49Y7942 — Network Technical Data

IBM · SFP TRANSCEIVER
WHAT YOU NEED TO KNOW
SR = Short Range (multimode, 300m) | LR = Long Range (single-mode, 10km) DOM = Digital Optical Monitoring — most enterprise SFPs support it
MATCH ALL THREE: Speed + Wavelength + Brand compatibility
PRODUCT OVERVIEW

IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - Option. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
49Y7942
SPECIFICATIONS
Part Number49Y7942
ManufacturerIBM
Interface10GbE
Capacity10GB
FITS THESE MACHINES
Lenovo System x x3650 M3
Lenovo System x x3690 X5
Lenovo System x3850 X5
COMPONENT DIAGRAM
BAIL LATCH 10G SFP+ 850nm · SR (MMF, 300m) DOM: Digital Optical Monitoring TX RX LC DUPLEX 20-PIN EDGE CONNECTOR ~56.5 mm ~13.4mm SFP+ TRANSCEIVER | 10G | 850nm | SR (MMF, 300m) Hot-swappable | LC duplex fiber | DDM/DOM supported TITLE SFP+ XCVR PN 49Y7942 MFR IBM IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Em
KEY FEATURES
•
10GbE Interface
•
10GB 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
SUBSTITUTES & CROSS-REFERENCES 8
49Y7940CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - Option
compatible
49Y7941CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - P/N
compatible
49Y7943CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - SBB
compatible
2073-5700CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - Option
compatible
49Y7951CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - P/N
compatible
49Y7952CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - FRU
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
49Y7940SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - FRU
IBM
49Y7941SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - FRU
IBM
49Y7943SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 49Y7942?
49Y7942 is a IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Emulex VFA II Controller - Option manufactured by IBM.
What parts can replace 49Y7942?
There are 8 known substitutes for 49Y7942: 49Y7940, 49Y7941, 49Y7943 and 5 more. Substitute compatibility should be verified for your specific system.
Is 49Y7942 still available?
49Y7942 is currently Unknown.
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PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.