UCS-HD1T7K6GAN=: Cisco’s 1TB SAS Drive for
Technical Specifications and Mechanical Design...
Understanding the ASR920-PWR-BLANK=: Design and Function
The Cisco ASR920-PWR-BLANK= is a power supply slot blanking plate designed for the ASR 920 Series routers. This unassuming component plays a critical role in maintaining airflow integrity, preventing dust ingress, and ensuring thermal stability in environments where redundant power supplies aren’t deployed. By sealing unused power supply slots, it helps comply with NEBS (Network Equipment-Building System) and ETSI standards for telecom equipment, which mandate physical safety and EMI containment.
Key technical considerations:
- Material: Heavy-duty metal construction for durability and EMI shielding.
- Compatibility: Fits all ASR 920 chassis models, including ASR-920-12SZ-IM, ASR-920-24SZ-IM, and UCPE variants.
- Installation: Tool-less design for quick deployment during initial setup or upgrades.
ASR920-PWR-BLANK= vs. Open Slot: Risks and Operational Impacts
Leaving power supply slots unsealed in carrier environments can lead to cascading issues. Here’s a breakdown:
| Factor | With ASR920-PWR-BLANK= | Open Slot |
|---|---|---|
| Airflow Efficiency | Maintains directed cooling | Disrupted airflow, risking hotspots |
| EMI Compliance | Shields against interference | Potential EMI leaks |
| Physical Safety | Prevents accidental contact | Exposed live circuits |
| Longevity | Reduces dust accumulation | Accelerated fan/component wear |
For service providers operating in harsh environments (e.g., cell towers or industrial sites), the blanking plate is non-negotiable for sustained uptime.
Addressing Common User Concerns: Cost, Compatibility, and Sourcing
Q: Is this plate compatible with older ASR 901 or ASR 903 routers?
A: No. The ASR920-PWR-BLANK= is exclusive to the ASR 920 Series due to chassis slot dimensions.
Q: Can third-party blanks be used instead?
A: Cisco strongly advises against it. Third-party plates may lack EMI shielding certifications, voiding compliance and warranties.
Q: Where can operators source genuine blanks cost-effectively?
A: Authorized resellers like [“ASR920-PWR-BLANK=” link to (https://itmall.sale/product-category/cisco/) stock OEM-certified blanks, often at lower costs than buying directly with bulk orders.
Why the ASR920-PWR-BLANK= Isn’t Just “Another Part Number”
Having deployed ASR 920 routers in desert and coastal regions, I’ve seen firsthand how minor components dictate major outcomes. Dust-clogged fans from unsealed slots can trigger thermal shutdowns during peak traffic—a preventable crisis that costs far more than a blanking plate. While it’s tempting to dismiss such parts as trivial, their absence often surfaces during audits or outages, turning a 50oversightintoa50 oversight into a 50oversightintoa50,000 liability. In network engineering, the devil isn’t just in the details—it’s in the blanks.