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. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System 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
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 5

605535-2Same_fscGOVERNMENT REGISTRY

same_fsc cross-reference

same_fsc

800T20-20K1-1Same_fscGOVERNMENT REGISTRY

same_fsc cross-reference

same_fsc

2658779Same_fscGOVERNMENT REGISTRY

same_fsc cross-reference

same_fsc

8250405-30InterchangeableGOVERNMENT REGISTRY

Same NIIN cross-reference

interchangeable

8002459402SubstituteBROKER-VERIFIED

Cisco WS-X4991 Catalyst 4948 Fan Module Tray

substitute

LIFECYCLE

StatusACTIVEGOVERNMENT REGISTRY

AvailabilityOEM and secondary market

RoHS CompliantEAR99ESD SensitiveNot HAZMAT

RELATED PARTS 3

C3KX-FAN-23CFM

CISCO 3750X/3560X SERIES SWITCH FAN MODULE

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

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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 are 5 known substitutes for WS-X4991: 605535-2, 800T20-20K1-1, 2658779 and 2 more. 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 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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