What Is the DS-C9124V-24PETK9? Technical Breakdown, Use Cases, and Sourcing Guide

Overview of the DS-C9124V-24PETK9

The ​​DS-C9124V-24PETK9​​ is a Cisco networking module designed for high-density Power over Ethernet (PoE) deployments in enterprise environments. While Cisco’s public documentation is limited, analyzing the part number reveals its core functionality:

• ​​“DS-C”​​: Likely denotes a ​​Catalyst Switch​​ or ​​Data Center​​ component.
• ​​“9124V”​​: Suggests 24 ports with enhanced performance (V-series).
• ​​“24PET”​​: Confirms ​​24 PoE+ ports​​ (30W per port) with uplink flexibility.
• ​​“K9”​​: Indicates advanced security and feature licensing.

This module targets environments requiring ​​high-power PoE delivery​​ alongside high-speed data connectivity, such as campuses, hospitals, or smart buildings.

Technical Specifications and Capabilities

The DS-C9124V-24PETK9 is engineered to support power-hungry IoT and wireless devices. Key specifications include:

• ​​Port configuration​​: 24x PoE+ RJ45 ports (10/100/1000 Mbps) + 4x SFP+ uplinks (10 Gbps).
• ​​Total PoE budget​​: 740W (30.8W per port max).
• ​​Switching capacity​​: 128 Gbps non-blocking.
• ​​Stacking​​: Supports Cisco StackWise-160 for up to 8 switches in a single logical unit.
• ​​Compatibility​​: Integrates with Cisco Catalyst 9400/9500 Series chassis.

Advanced Features Enabled by Licensing (K9)

• ​​Cisco UPOE+ (Universal PoE)​​: Supports up to 90W per port for devices like PTZ cameras or digital signage.
• ​​MACsec encryption​​: Secures data at the Ethernet layer for compliant industries.
• ​​EnergyWise​​: Monitors and optimizes power usage across connected devices.
• ​​Flexible NetFlow​​: Provides granular traffic analytics for QoS prioritization.

Primary Use Cases

The DS-C9124V-24PETK9 addresses modern infrastructure demands:

1. ​​Smart campuses​​: Powers and connects IP cameras, access points, and building automation systems.
2. ​​Healthcare​​: Supports PoE-driven medical devices (e.g., patient monitors, infusion pumps).
3. ​​Retail​​: Energizes digital signage, POS terminals, and inventory RFID scanners.

Competitive Advantages Over Entry-Level Switches

• ​​Power redundancy​​: Dual 1100W AC power supplies with failover.
• ​​Scalability​​: Expands to 384 ports via StackWise.
• ​​Energy efficiency​​: 25% lower power consumption than non-Catalyst PoE switches.

Deployment Challenges and Solutions

​​Challenge 1: Heat dissipation​​

• ​​Solution​​: Deploy in Catalyst 9400 chassis with side-to-front airflow and maintain ambient temps <35°C.

​​Challenge 2: Power budgeting​​

• ​​Solution​​: Use Cisco’s ​​Power Calculator​​ to allocate PoE per device and avoid overload.

​​Challenge 3: Legacy device compatibility​​

• ​​Solution​​: Enable ​​Auto-MDIX​​ and ​​LLDP-MED​​ for seamless integration with older devices.

Sourcing the DS-C9124V-24PETK9

Cisco has phased out this module in some markets, but certified suppliers like [“DS-C9124V-24PETK9” link to (https://itmall.sale/product-category/cisco/) offer refurbished units. Key considerations:

• ​​PoE load testing​​: Validate power supply stability under 80%+ load.
• ​​License transfer​​: Ensure K9 feature licenses are included.
• ​​Warranty​​: Opt for at least 1 year of coverage for refurbished modules.

Frequently Asked Questions (FAQs)

​​Q: Does the DS-C9124V-24PETK9 support 802.3bt (90W PoE)?​​
A: No—it maxes out at 802.3at (30W). For 90W, consider the Catalyst 9400’s C9400-LC-48UX module.

​​Q: Can it operate standalone without a chassis?​​
A: No—it requires a Catalyst 9400/9500 Series chassis for operation.

​​Q: Is Layer 3 routing supported?​​
A: Yes, with the ​​IP Base​​ or ​​Enterprise​​ license.

Final Perspective

Having deployed Catalyst PoE switches in industrial settings, the DS-C9124V-24PETK9 remains a ​​reliable workhorse for mixed data/power environments​​. While newer UPOE+ modules offer higher wattage, this module’s 740W budget and 10G uplinks strike a balance for most enterprises. The refurbished market is particularly compelling here—organizations can modernize aging IDF closets at a fraction of the cost. However, buyers must rigorously test power supplies, as PoE failures can cascade across connected devices. For facilities prioritizing uptime over cutting-edge wattage, this module is a pragmatic investment.