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633538-001 ✓ Verified by PartsTable
HP · CONTROLLER · RAID_HBA
WHAT YOU NEED TO KNOW
RAID HBAs — always confirm bracket height (full or half). Ship unlocked with test reports. Our edge: we can verify specific firmware versions. Key checks: Ship with test reports. Ship UNLOCKED.
Firmware must match server
PRODUCT OVERVIEW

HP Smart Array P420/1GB FBWC 6Gb 2-ports Int SAS Controller. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
CONTROLLER→ RAID_HBA→ 633538-001
SPECIFICATIONS
Part Number633538-001
ManufacturerHP
Capacity1GB
COMPONENT DIAGRAM
RAID ASIC CACHE FBWC SAS 0 SAS 1 SAS 2 SAS 3 BATT EXT 0 EXT 1 PCIe x8 ~187 mm STORAGE CONTROLLER | RAID 0,1,5,6,10 | PCIe SAS/SATA | FBWC cache | Battery backup connector | TITLE RAID CTRL PN 633538-001 MFR HP HP Smart Array P420/1GB FBWC 6Gb 2-ports
KEY FEATURES
•
1GB Capacity
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
610670-001Compatible
HP Smart Array P420/ZM 6G 2-Port Int PCI-E 3.0x8 SAS Controller
compatible
631670-B21Compatible
HP Smart Array P420 1Gb FBWC 6G 2-Port Int PCI-E 3.0x8 SAS Controller
compatible
631671-B21Compatible
HP Smart Array P420 2Gb FBWC 6G 2-Port Int PCI-E 3.0x8 SAS Controller
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
THIS PART SUBSTITUTES FOR 3
610670-001SUBSTITUTE
HP Smart Array P420/ZM 6G 2-Port Int PCI-E 3.0x8 SAS Controller
HPE
631670-B21SUBSTITUTE
HP Smart Array P420/ZM 6G 2-Port Int PCI-E 3.0x8 SAS Controller
HPE
631671-B21SUBSTITUTE
HP Smart Array P420/ZM 6G 2-Port Int PCI-E 3.0x8 SAS Controller
HPE
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FREQUENTLY ASKED QUESTIONS
What is 633538-001?
633538-001 is a HP Smart Array P420/1GB FBWC 6Gb 2-ports Int SAS Controller manufactured by HP. It is classified as a CONTROLLER (RAID_HBA).
What parts can replace 633538-001?
There are 3 known substitutes for 633538-001: 610670-001, 631670-B21, 631671-B21. Substitute compatibility should be verified for your specific system.
Is 633538-001 still available?
633538-001 is currently Unknown.
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Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
Last verified: July 2026