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81Y4521 — IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU

IBM · COMPONENT
PRODUCT OVERVIEW

81Y4521: IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU. It is cited to fit LENOVO System x System x x3550 M3, LENOVO System x System x x3650 M3, LENOVO System x System x x3690 X5 and 2 more listed machines.

IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

SPECIFICATIONS
Part Number81Y4521
ManufacturerIBM
Capacity320GB
FITS THESE MACHINES
Lenovo System x x3550 M3
Lenovo System x x3650 M3
Lenovo System x x3690 X5
Lenovo System x3750 M4
Lenovo System x3850 X5
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: IBM CAP: 320GB IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller... TITLE COMPONENT PN 81Y4521 MFR IBM IBM 320Gb High IOPS SD
KEY FEATURES
•
320GB Capacity
TYPICAL APPLICATIONS
  • Enterprise storage arrays and SANs
  • Direct-attached storage (DAS) expansion
  • Database tier storage (OLTP, OLAP)
  • Virtual machine datastore expansion
  • Backup-to-disk and disaster recovery targets
  • Content delivery and media streaming storage
SUBSTITUTES & CROSS-REFERENCES 3
46M0878CompatiblePARTNER
IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - Option
compatible
46M0887CompatiblePARTNER
IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU
compatible
46M0889CompatiblePARTNER
IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - SBB
compatible
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 3
46M0878SUBSTITUTE
IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU
IBM
46M0887SUBSTITUTE
IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU
IBM
46M0889SUBSTITUTE
IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU
IBM
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FREQUENTLY ASKED QUESTIONS
What is 81Y4521?
81Y4521 is a IBM 320Gb High IOPS SD Class SSD PCI-E 2.0x8 Controller - FRU manufactured by IBM.
What parts can replace 81Y4521?
There are 3 known substitutes for 81Y4521: 46M0878, 46M0887, 46M0889. 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.