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654873001 — HP FBWC Capacitor W/ 12IN Cable

HP · TRANSCEIVER · POWER_CABLE
PRODUCT OVERVIEW
HP FBWC CAPACITOR W/ 12IN CABLE

654873001: HP FBWC Capacitor W/ 12IN Cable.

The HP 654873001 is a Flash-Backed Write Cache capacitor pack with a 12-inch cable, designed for HPE Smart Array controllers in ProLiant Gen8 and Gen9 servers. It provides backup power to the FBWC module during unexpected power loss, ensuring cached write data is safely committed to flash memory. Unlike traditional batteries, the supercapacitor design offers a longer operational lifespan with no scheduled replacement cycles and no temperature-related degradation.

This is the short-cable variant (12") designed for 1U chassis configurations. The long-cable variant for 2U+ chassis is 660093-001 (36"). This is a high-volume replacement part in TPM market as ProLiant Gen8 and Gen9 servers remain widely deployed.

WHERE IT FITS
TRANSCEIVER→ POWER_CABLE→ 654873001
SPECIFICATIONS
Part Number654873001
ManufacturerHP
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COMPONENT DIAGRAM
CAP 72V + - CAP 72V BRACKET TO CTRL CABLE: — ~76 mm CACHE BACKUP | Supercapacitor | Cable: — Connects to RAID controller | | Controller: See controller spec SCHEMATIC: + - 2S2P SUPERCAP PACK TITLE CACHE BATT PN 654873001 MFR HP HP FBWC Capacitor W/ 12IN Cable
KEY FEATURES
•
Flash-Backed Write Cache Capacitor
•
12" Cable Length
Compact cable for 1U chassis installations
•
Supercapacitor Technology
Longer lifespan than traditional batteries — no scheduled replacement cycles
•
Hot-Plug Capable
•
No Maintenance Required
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
SUBSTITUTES & CROSS-REFERENCES 2
668943B21SubstituteBROKER-VERIFIED
substitute
substitute
660091001SubstituteBROKER-VERIFIED
Flash-backed write cache (FBWC) capacitor cable pack - Includes 30cm (12in) long cable
substitute
LIFECYCLE

No lifecycle data available.

THIS PART SUBSTITUTES FOR 2
660091-001SUBSTITUTE
HP Smart Array FBWC Capacitor Pack with 12in Cable 6-Pin Plug
HPE
668943-B21SUBSTITUTE
HP Smart Array FBWC Capacitor Pack with 12in Cable 6-Pin Plug
HPE
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FREQUENTLY ASKED QUESTIONS
What is 654873001?
654873001 is a HP FBWC Capacitor W/ 12IN Cable manufactured by HP. It is classified as a TRANSCEIVER (POWER_CABLE).
What parts can replace 654873001?
There are 2 known substitutes for 654873001: 668943B21, 660091001. 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.