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PartsTable / TRANSCEIVER / 654873-001
654873-001 ✓ Verified by PartsTable
HP · TRANSCEIVER · POWER_CABLE
WHAT YOU NEED TO KNOW
Very common replacement part Capacitors degrade slower than batteries but still lose capacity over time
CABLE LENGTH IS CRITICAL: 660093-001 = 36" (2U+), 654873-003 = 24" (1U)
PRODUCT OVERVIEW
HP FBWC CAPACITOR W/ 12IN CABLE

The HP 654873-001 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→ 654873-001
SPECIFICATIONS
Part Number654873-001
ManufacturerHP
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 654873-001 MFR HP HPE 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
660091-001Compatible
HP Smart Array FBWC Capacitor Pack with 12in Cable 6-Pin Plug
compatible
668943-B21Compatible
HP Smart Array FBWC Super Capacitor Pack with 12in Cable
compatible
LIFECYCLE
StatusUNKNOWN
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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 654873-001?
654873-001 is a HPE FBWC Capacitor W/ 12IN Cable manufactured by HP. It is classified as a TRANSCEIVER (POWER_CABLE).
What parts can replace 654873-001?
There are 2 known substitutes for 654873-001: 660091-001, 668943-B21. Substitute compatibility should be verified for your specific system.
Is 654873-001 still available?
654873-001 is currently Unknown.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026