Cisco WS-C3750X-12S-S Gigabit Stackable Switch

What It Is

The Cisco Catalyst WS-C3750X-12S-S is a fixed-configuration, stackable enterprise LAN switch belonging to the Catalyst 3750-X series. It provides 12 Gigabit Ethernet SFP fiber ports and runs the IP Base feature set, making it suitable for access-layer deployments in campus networks. This model offers advanced switching capabilities with Cisco StackWise Plus technology for resilient and scalable network architectures.

Technical Details

• Ports: 12 x Gigabit Ethernet SFP (fiber) ports
• Feature Set: IP Base (supports basic Layer 2/3 routing, QoS, and security)
• Series: Catalyst 3750-X
• Form Factor: Rack-mountable, stackable switch
• Stacking: Cisco StackWise Plus technology (up to 440 Gbps stacking bandwidth)
• Power: Standard AC power supply (no PoE support on this model)
• Switching Capacity: Up to 160 Gbps (per stack member)

Configuration & Options

• Model WS-C3750X-12S-S: Factory-shipped with IP Base software image
• License Upgrade: Field-upgradable to IP Services feature set (via license, not included)
• SFP Modules: Requires separately ordered SFP transceivers for fiber connectivity (e.g., 1000BASE-SX, 1000BASE-LX/LH)
• Stacking Cables: StackWise cables and modules are available as optional accessories
• Power Supplies: Optional redundant AC power supply units (sold separately)

Operating Conditions

This switch is designed for enterprise access-layer deployment in wiring closets or server rooms within campus networks. It operates in standard indoor environments with controlled temperature and humidity, typically mounted in a 19-inch rack. The IP Base feature set supports static routing, VLANs, and Spanning Tree Protocol, suitable for medium-sized networks requiring reliable layer 2/3 connectivity. Its SFP-only ports are ideal for fiber backbone connections to distribution switches or server farms.