Cisco C3KX-NM-1G 1G Network Module for Catalyst 3K-X Series Switch –

Unlock reliable 1Gbps uplink connectivity with the Cisco C3KX-NM-1G network module, purpose-built for Catalyst 3560-X and 3750-X Series switches. This compact and efficient module offers high availability and redundancy support, ensuring continuous operation for enterprise-grade networks.

Tested and unused, this open-box unit is ideal for critical infrastructures requiring seamless hot-swapping, IPv6 readiness, and QoS compatibility. Its robust design, long MTBF, and NEBS-compliant temperature range make it suitable for demanding environments.

Key Features & Benefits

Fully compatible with all Cisco Catalyst 3560-X and 3750-X switch variants
Provides four 1G SFP ports for flexible uplink expansion
Hot-swappable design minimizes network downtime during maintenance
Supports IPv4/IPv6 routing and QoS policy enforcement

Ideal Uses

Enhancing uplink performance for Cisco Catalyst 3750-X/3560-X switch networks
Adding modular 1G SFP connectivity in enterprise server rooms
Supporting VLANs, IPv6 traffic, and policy-based QoS in managed environments
Minimizing downtime in live data centers through hot-swappable installation

Specifications

Condition: device has been unpacked and inspected, never deployed
Brand: Cisco
Model: C3KX-NM-1G
Compatibility: Catalyst 3560-X and 3750-X Series switches
Port Type: 1G Ethernet (SFP slots)
Hot-Swappable: Yes
Performance Data Rate: 1 Gbps
High Availability: Redundancy and failover support
Power Consumption: 6W
MTBF: 5,083,574 hours (Telcordia SR-332)
Operating Temperature: 0°C to 45°C (normal), -5°C to 55°C (NEBS short-term)
Humidity: 5% to 95% 
Compliance: UL60950-1, CE, GOST, CCC
Emissions: FCC Part 15 Class A, CISPR22 Class A
Cisco IOS Support: Compatible with IOS for 3560-X/3750-X
What's in the Box: Cisco C3KX-NM-1G Network Module Only