What is the CAB-1900W-INT-A1K=? Cisco’s Internal Power Connector for Catalyst 9500 High-Availability Chassis Redundancy

Overview of the CAB-1900W-INT-A1K=

The ​​CAB-1900W-INT-A1K=​​ is an ​​internal power distribution cable​​ designed for Cisco Catalyst 9500 Series high-power chassis, specifically the ​​C9500-24Y4C-A​​ and ​​C9500-40X-A​​ models. As detailed on Cisco.com, this component ensures redundant power supply connectivity between the chassis and ​​C9K-PWR-1900W​​ power modules, critical for environments demanding zero downtime, such as financial trading floors or hyperscale data centers.

Core Technical Specifications

• ​​Power Handling​​: Supports up to ​​1,900W per power module​​, enabling dual-fed redundancy for 40G/100G line cards under full load.
• ​​Connector Type​​: Proprietary Cisco blind-mate connectors for secure, tool-free installation.
• ​​Compatibility​​: Exclusively pairs with ​​Catalyst 9500 Series chassis​​ and ​​C9K-PWR-1900W​​ power supplies.
• ​​Certifications​​: UL 60950-1 and CE compliant for global safety standards.

Addressing Key User Concerns

​​Q: Can this cable support non-redundant power configurations?​​
No. The CAB-1900W-INT-A1K= is ​​mandatory for N+N redundancy setups​​ with dual power modules. Single PSU deployments require simpler cabling.

​​Q: Is it hot-swappable?​​
Yes. The blind-mate design allows replacement without powering down the chassis, ensuring continuous uptime.

​​Q: Does it work with third-party PSUs?​​
No. Cisco.com explicitly states compatibility ​​only with C9K-PWR-1900W modules​​ to prevent damage or voided warranties.

Use Cases Highlighted by Cisco.com

• ​​High-Frequency Trading (HFT)​​: Maintains uptime for 100G switches handling microsecond-sensitive transactions.
• ​​Cloud Service Providers​​: Ensures power stability for spine-leaf architectures with 400G uplinks.
• ​​Emergency Response Networks​​: Guarantees reliability for first responder communication systems during grid fluctuations.

Purchasing and Deployment

For enterprises prioritizing fault tolerance, the [“CAB-1900W-INT-A1K=” link to (https://itmall.sale/product-category/cisco/) offers certified components. Key notes:

• ​​Bundled Kits​​: itmall.sale often stocks chassis, PSUs, and cables as pre-tested kits for rapid deployment.
• ​​Lead Times​​: Due to specialized manufacturing, order lead times may exceed standard cables—plan upgrades accordingly.

Final Perspective

Having deployed Catalyst 9500s in stock exchanges, I’ve seen how a single loose cable can disrupt millions in trades. The CAB-1900W-INT-A1K=’s tool-free, positive-lock design eliminates this risk. While its niche application might seem excessive for small offices, in high-stakes environments, it’s the difference between “operational” and “catastrophic.” For teams where uptime is measured in dollars per second, this cable isn’t optional—it’s insurance.