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by Cisco
Product Line: Cisco ASR 920 Series
Product Type: Aggregation Services Router
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Product Description

The ASR-920-4SZ-A is a Cisco networking device equipped with 2 GE and 4 10GE ports, designed for high-throughput applications within a compact form factor of 1.72 x 15.5 x 9.1 inches and a weight of 7.7 lbs. It operates on Cisco IOS® XE software, supports a power consumption of 75 W, and offers various rack mount options including ETSI Rack-Mount Kit, 19-in. Rack-Mount Kit, and 23-in. Rack-Mount Kit for flexible installation. This device is built to withstand harsh conditions, featuring an operating temperature range from -40 °C to 70 °C, an operating altitude up to 1,000 ft, and an MTBF of 301,480 hours, ensuring reliability and durability in challenging environments.

FAQs for the ASR-920-4SZ-A

  • What software does the networking hardware run?
    The hardware runs Cisco IOS® XE software.
  • How many ports are available on the device?
    The device includes 2 GE and 4 10GE ports.
  • What are the dimensions and weight of the hardware?
    It measures 1.72 x 15.5 x 9.1 inches and weighs 7.7 lbs.
  • What rack mount options are supported?
    Supported options include ETSI Rack-Mount Kit, 19-in. Rack-Mount Kit, and 23-in. Rack-Mount Kit.
  • What is the airflow direction for cooling?
    Airflow is from front-to-back.
  • What is the Mean Time Between Failures (MTBF) rating?
    The MTBF rating is 301,480 hours.
  • How much power does the device consume?
    Power consumption is 75 W.
  • What are the operating temperature and humidity ranges?
    Operating temperature ranges from -40 °C to 70 °C, and relative humidity ranges from 5% (non-condensing) to 95% (non-condensing).
  • What safety and compliance standards does the device meet?
    It meets standards including FCC CFR47 Part 15 Class A, UL 60950-1, CAN/CSA C22.2 No. 60950-1, IEC 60950-1, EN 60950-1, AS/NZS 60950.1, NEBS GR-63-CORE, and GR-1089-CORE.
  • What are the key features of the hardware?
    Key features include high-throughput, small form factor, and low power consumption.

Product Review

The Cisco ASR-920-4SZ-A offers a compact form factor and high-throughput capabilities, suitable for space-constrained environments and demanding network requirements. With a mix of 2 GE and 4 10GE ports, it supports versatile connectivity options, though it may lack sufficient GE ports for scenarios requiring extensive legacy connections. Its low power consumption of 75W and impressive MTBF of 301,480 hours ensure energy efficiency and reliability, but the noise level at 52 dBA could be a concern in quieter office settings.


The Cisco ASR-920-4SZ-A is a compact, high-performance networking device designed for efficient service delivery in various environments. Powered by Cisco IOS® XE, it offers a sophisticated platform that combines high throughput with low power consumption, making it an ideal solution for both service providers and enterprise networks. This device is housed in a 1RU chassis, measuring 1.72 x 15.5 x 9.1 inches and weighs 7.7 lbs, optimizing space without compromising functionality. It supports a wide range of rack mounts, including ETSI, 19-inch, and 23-inch kits, providing flexibility for deployment in different rack environments. The airflow is designed from front to back, ensuring efficient cooling and reliable operation over long periods. Key hardware specifications include: - Ports: Equipped with 2 Gigabit Ethernet and 4 10-Gigabit Ethernet ports, the ASR-920-4SZ-A facilitates high-speed connectivity and efficient data transfer across networks. - Power: Operating on a power input range from 100 VAC to 240 VAC and consuming 75W, it balances performance with energy efficiency. The device functions within a broad temperature range, from -40 °C to 70 °C, ensuring reliability under varied environmental conditions. - Durability and Compliance: With a mean time between failures (MTBF) of 301,480 hours, it demonstrates exceptional durability. It complies with multiple safety and electromagnetic standards, including FCC, UL, and NEBS, highlighting its safety and reliability in sensitive environments. The ASR-920-4SZ-A's operational capabilities are enhanced by its support for a wide operational altitude up to 1,000 ft and storage altitude up to 15,000 ft, ensuring its adaptability to various geographical locations. Humidity levels from 5% to 95% (non-condensing) for operating conditions and extreme temperature resilience in storage further attest to its ruggedness. Seismic Zone 4 certification confirms its stability in areas prone to seismic activity, while an acoustic noise level of 52 dBA ensures it maintains a low noise profile, suitable for any working environment. Electromagnetic compliance with standards like FCC CFR47 Part 15 Class A and safety specifications such as UL 60950-1 underline its adherence to industry norms for safe operation. In terms of features, the ASR-920-4SZ-A stands out for its high-throughput capabilities in a small form factor. This combination, along with its low power consumption, makes it a versatile choice for deploying high-demand services without occupying excessive space or energy resources. Overall, the Cisco ASR-920-4SZ-A is engineered to meet the needs of modern networks, offering a balance of performance, efficiency, and reliability. Whether for expanding service delivery or enhancing enterprise connectivity, this device provides a solid foundation for any networking infrastructure.


Item Number and ProducerCisco ASR-920-4SZ-A
Operating SystemCisco IOS® XE
Interface Options2 Gigabit Ethernet and 4 10-Gigabit Ethernet Ports
Dimensions (Height x Width x Depth)1.72 x 15.5 x 9.1 inches
Mass7.7 pounds
Standard Rack Unit Height1 RU
Rack Mounting OptionsETSI, 19-inch, and 23-inch Rack-Mount Kits
Cooling DirectionFront-to-Back
Mean Time Between Failures301,480 hours
Energy Use75 Watts
Power Supply Requirements100 VAC to 240 VAC, 50 to 60 Hz
Lowest Operating Temperature-40 °C
Highest Operating Temperature70 °C
Operational Elevation LimitUp to 1,000 feet
Least Operating Humidity5% (Non-Condensing)
Greatest Operating Humidity95% (Non-Condensing)
Lowest Storage Temperature-40 °C
Highest Storage Temperature70 °C
Storage Elevation Maximum15,000 feet
Seismic ComplianceZone 4
Sound Emission52 dBA
Electromagnetic Interference StandardFCC CFR47 Part 15 Class A
Compliance CertificationsUL 60950-1, 2nd Ed., CAN/CSA C22.2 No. 60950-1-07 2nd Ed., IEC 60950-1, 2nd Ed., EN 60950-1, 2nd Ed., AS/NZS 60950.1:2003
NEBS CertificationsGR-63-CORE, GR-1089-CORE, SR-3580 NEBS Level 4
Key AttributesHigh Data Rate, Compact, Efficient Power Usage

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