WS-X4991 — Cooling Component Specs

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CISCO · COOLING · HOTPLUG_FAN

WHAT YOU NEED TO KNOW

Standard hotplug fans — nothing particular to note.

PRODUCT OVERVIEW

Cisco WS-X4991 Catalyst 4948 Fan Module Tray. Key specifications include Function: Specialized switching/service module, Management: Advanced capabilities, Form Factor: Modular line card, Performance: High throughput, Chassis Compatibility: Catalyst 4500 series. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5963-01-631-9048, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

COOLING→ HOTPLUG_FAN→ WS-X4991

NSN: 5963-01-631-9048
FSC: 5963 — ELECTRONIC MODULE,STANDARDIZED
CAGE: 0GX96 — CISCO SYSTEMS INC (USA)

SPECIFICATIONS

Function	Specialized switching/service module
Management	Advanced capabilities
Performance	High throughput
Chassis Compatibility	Catalyst 4500 series
NSN	5963-01-631-9048

COMPONENT DIAGRAM

TYPICAL APPLICATIONS

Server thermal management and cooling
Hot-swap fan replacement in production environments
Redundant cooling for high-availability systems

VERIFIED SUBSTITUTES & CROSS-REFERENCES 1

8250405-30Interchangeable

Same NIIN cross-reference

interchangeable

LIFECYCLE

StatusACTIVE

AvailabilityOEM and secondary market

RoHS CompliantEAR99ESD SensitiveNot HAZMAT

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C3850-FAN-T1

Cisco Catalyst 3850 and WLC 5760 Type 1 Fan Module

NXA-FAN-30CFM-F

Cisco Nexus 2K/3K/9K Single Fan, port side exhaust airflow

ACS-4450-FANASSY

Cisco ISR 4450 & 4350 Fan Assembly

ASR-9006-FAN-V2

Cisco ASR-9006 Fan Tray Version 2

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FREQUENTLY ASKED QUESTIONS

What is WS-X4991?

WS-X4991 is a Cisco WS-X4991 Catalyst 4948 Fan Module Tray manufactured by CISCO. It is classified as a COOLING (HOTPLUG_FAN).

What parts can replace WS-X4991?

There is 1 known substitute for WS-X4991: 8250405-30. Substitute compatibility should be verified for your specific system.

What is the NSN for WS-X4991?

WS-X4991 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5963-01-631-9048. This indicates validated use in U.S. government and defense supply chains.

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WS-X4991 — Cooling Component Specs

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