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81Y3521 — IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - SBB

IBM · SFP TRANSCEIVER
PRODUCT OVERVIEW

81Y3521: IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - SBB.

IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - SBB. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

SPECIFICATIONS
Part Number81Y3521
ManufacturerIBM
Interface10GbE
Capacity10GB
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 81Y3521 MFR IBM IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 In
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 3
81Y3520CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - Option
compatible
81Y3522CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - FRU
compatible
81Y3523CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - SBB
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
81Y3520SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - P/N
IBM
81Y3522SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - P/N
IBM
81Y3523SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - P/N
IBM
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FREQUENTLY ASKED QUESTIONS
What is 81Y3521?
81Y3521 is a IBM NIC 10GbE SFP+ 2-Port PCI-E-3.0x8 Intel X710 Controller - SBB manufactured by IBM.
What parts can replace 81Y3521?
There are 3 known substitutes for 81Y3521: 81Y3520, 81Y3522, 81Y3523. Substitute compatibility should be verified for your specific system.
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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.