S-A9K-L23P-200-CM= High-Density Service Modul
S-A9K-L23P-200-CM= in Cisco ASR 9000 Architecture...
Overview of the A900-PWR550-A=
The A900-PWR550-A= is a 550W AC power supply module engineered for Cisco’s ASR 9000 Series routers. Designed for environments prioritizing cost efficiency and moderate power demands, it balances reliability with scalability for smaller deployments or secondary redundancy setups.
Core Technical Specifications
- Power Output: 550W AC input, optimized for single or dual redundant configurations.
- Efficiency: Operates at 85% efficiency under typical loads, minimizing energy waste.
- Compatibility: Certified for ASR 9901 and 9904 chassis (not compatible with larger 9910/9922 models).
- Hot-Swappable: Allows replacement without disrupting router operations.
Addressing Key User Concerns
Q: Can this module support high-density line cards like 400G interfaces?
No—the A900-PWR550-A= is tailored for lower-power line cards (e.g., 10G/40G). For 100G/400G modules, higher-wattage PSUs like the A900-PWR1200-A= are required.
Q: Is it backward-compatible with older ASR 9000 chassis?
Yes, but only with firmware revisions post-IOS XR 6.5.1.
Performance Comparison: A900-PWR550-A= vs. A900-PWR1200-A=
| Feature | A900-PWR550-A= | A900-PWR1200-A= |
|---|---|---|
| Power Capacity | 550W | 1200W |
| Ideal Use Case | Edge networks, lab environments | Data center cores, high-density |
| Redundancy Cost | Lower upfront investment | Higher, but scales with demand |
| Energy Efficiency | 85% | 90%+ |
Ideal Deployment Scenarios
- Branch Office Edge Routers: Powering lightweight traffic loads.
- Lab or Testing Environments: Simulating network setups without overprovisioning.
- Redundant Backup Systems: Paired with primary PSUs for failover protection.
For verified procurement, the A900-PWR550-A= is available through itmall.sale.
Why This Module Fills a Critical Gap
Having deployed ASR 9000 systems in mixed environments, the A900-PWR550-A= shines in scenarios where overengineering power is unnecessary. While it lacks the muscle for high-density cores, its affordability and efficiency make it a pragmatic choice for edge deployments or budget-conscious projects. In my view, dismissing lower-wattage PSUs as “underpowered” overlooks their role in optimizing total cost of ownership for specific operational tiers.