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03T6531 — IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - Option

LENOVO · SFP TRANSCEIVER
PRODUCT OVERVIEW

03T6531: IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - Option.

IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - Option. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

SPECIFICATIONS
Part Number03T6531
ManufacturerLENOVO
Interface10GbE
Capacity10GB
MORE FROM LENOVO
Popular Lenovo machine pages — browsing only, not a fit claim for 03T6531.
ThinkSystem SR650 V1 ThinkSystem SR650 V2 ThinkSystem SR630 V1 ThinkSystem SR630 V2 System x3650 M5 System x3550 M5 ThinkServer RD550 System x IBM System x3650 M4 ThinkServer RD650 SD530 System x3500 M4 ThinkServer RD350
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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 03T6531 MFR LENOVO IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 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 2
4XC0F28733CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - Option
compatible
03T8763CompatiblePARTNER
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - FRU
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
03T8763SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - FRU
LENOVO
0C19487SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - FRU
LENOVO
4XC0F28733SUBSTITUTE
IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - FRU
LENOVO
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FREQUENTLY ASKED QUESTIONS
What is 03T6531?
03T6531 is a IBM NIC 10GbE SFP+ 2-Port PCI-E-2.0x8 Intel X520-SR2 Controller for ThinkServer - Option manufactured by LENOVO.
What parts can replace 03T6531?
There are 2 known substitutes for 03T6531: 4XC0F28733, 03T8763. 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.