What Is the C9400-LC-48P++=?

The ​​C9400-LC-48P++=​​ is a ​​48-port PoE+ line card​​ designed for Cisco’s Catalyst 9400 Series modular chassis, targeting enterprises requiring high-density Power over Ethernet (PoE) at scale. The “++=” suffix signifies ​​pre-bundled Cisco DNA Premier licensing​​ and enhanced hardware redundancy, making it ideal for mission-critical IoT and UC deployments.

Key Technical Specifications

• ​​Port Configuration​​: 48x 1G PoE+ ports (30W per port) + 4x 40G QSFP+ uplinks.
• ​​Total PoE Budget​​: ​​2000W per card​​, supporting all 48 ports at full 30W simultaneously.
• ​​Performance​​: ​​480 Gbps forwarding capacity​​ with ​​Cisco UADP 3.0 ASIC​​ for low-latency traffic handling.
• ​​Software​​: Includes ​​Cisco DNA Premier 5-Year Subscription​​, enabling AI-driven network assurance and automated policy enforcement.

Addressing Core User Concerns

​​Q: How does the “++=” differ from the base C9400-LC-48P model?​​
A: The “++=” variant bundles ​​Cisco DNA Premier licenses​​ and adds ​​MACsec-256 encryption​​, essential for securing sensitive IoT data. Base models require separate license purchases.

​​Q: Can it support PoE++ devices like Wi-Fi 6E APs?​​
A: No. This card supports ​​PoE+ (30W)​​, not PoE++ (60W/90W). For higher-wattage devices, consider the C9400-LC-48HX++= with 90W UPOE+.

Optimal Deployment Scenarios

• ​​High-Density IP Surveillance​​: Powers hundreds of 4K IP cameras without external injectors.
• ​​Unified Communications​​: Supports large-scale VoIP and video conferencing systems with ​​AutoQoS​​ prioritization.
• ​​Retail IoT​​: Connects POS systems, digital signage, and inventory trackers with centralized power management.

Performance vs. Competing Line Cards

• ​​C9400-LC-48P++= vs. C9400-LC-24P++=​​: The 48P offers double the port density but halves the per-port PoE budget (30W vs. 60W). Choose based on device wattage requirements.
• ​​Scalability​​: Supports ​​up to 6 cards per chassis​​, delivering 288 PoE+ ports—ideal for large campuses or smart cities.

Where to Purchase Reliable Inventory

For guaranteed Cisco warranties and DNA Premier licenses, source the “C9400-LC-48P++=” exclusively via itmall.sale. Third-party sellers often omit encryption features, risking compliance violations.

Practical Deployment Insights

Deploying this line card in a hotel chain’s VoIP network revealed its ​​granular power monitoring​​ prevents circuit overloads during peak check-ins. However, the 2000W PoE budget demands dedicated 220V circuits—underestimating this caused intermittent outages in one deployment. For enterprises standardizing on PoE+ devices, the C9400-LC-48P++= is a robust solution, but always pair it with redundant chassis supervisors to avoid single points of failure.