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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-D Cisco operates on Cisco IOS® XE software, featuring 2 GE and 4 10GE ports within a compact 1.72 x 15.5 x 9.6 inches form factor and weighs 7.0 lbs. Designed for efficiency, it consumes 75 W of power, supports an input power range of -24 VDC to -48 VDC, and achieves a 397,400 hours MTBF, indicating high reliability. It operates within a temperature range of -40 °C to 70 °C, supports up to 1,000 ft operating altitude, and complies with both safety (UL 60950-1, EN 60950-1) and electromagnetic (FCC CFR47 Part 15 Class A) standards.

FAQs for the ASR-920-4SZ-D

  • What is the operating system for the device?
    The device runs on Cisco IOS® XE.
  • How many ports are available on this model?
    It has 2 GE and 4 10GE ports.
  • What are the dimensions and weight of the device?
    Dimensions are 1.72 x 15.5 x 9.6 inches and it weighs 7.0 lbs.
  • What rack mount options are supported?
    Supported rack mount 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.
  • Can you detail the device's power requirements?
    Power consumption is 75 W with input power ranging from -24 VDC to -48 VDC.
  • What are the operating temperature limits?
    Operating temperature ranges from -40 °C to 70 °C.
  • What is the MTBF (Mean Time Between Failures) rating?
    MTBF is rated at 397,400 hours.
  • What are the humidity requirements for operation?
    Operating relative humidity must be between 5% (non-condensing) and 95% (non-condensing).
  • What certifications does the device meet?
    It meets 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 certifications.

Product Review

The Cisco ASR-920-4SZ-D offers high-throughput with 2 GE and 4 10GE ports, suitable for demanding network environments, housed in a compact 1 RU size for efficient space utilization. Its low power consumption at 75W, coupled with a wide operating temperature range (-40 °C to 70 °C), ensures reliability and cost-effectiveness in various installation scenarios. However, the unit's 52 dBA acoustic noise level may be a consideration for deployment in noise-sensitive areas.


The Cisco ASR-920-4SZ-D is a compact, high-performance networking solution designed for service providers and enterprise networks. This device runs on Cisco IOS® XE software, providing advanced features and reliability. It is engineered to support high-throughput applications, with a small form factor that makes it ideal for space-constrained environments. Additionally, it offers low power consumption, with a typical power usage of 75 W, making it an energy-efficient choice for network infrastructure. This model comes equipped with a variety of ports, including 2 Gigabit Ethernet (GE) and 4 ten Gigabit Ethernet (10GE) ports, offering flexibility in connectivity options for different network requirements. The device's dimensions are 1.72 inches in height, 15.5 inches in width, and 9.6 inches in depth, and it weighs 7.0 lbs, making it suitable for rack mounting in a standard 1 Rack Unit (RU) space. It supports several rack mount kits, including ETSI, 19-inch, and 23-inch options, ensuring compatibility with different rack standards. The ASR-920-4SZ-D is designed with front-to-back airflow, promoting efficient cooling and reliable operation in various installations. It boasts a Mean Time Between Failures (MTBF) of 397,400 hours, indicating a high level of reliability and reduced downtime for maintenance. The device requires an input power ranging from -24 VDC to -48 VDC and operates effectively within a broad temperature range, from -40 °C to 70 °C, accommodating various environmental conditions. It also operates at altitudes of up to 1,000 ft, with storage capabilities extending to 15,000 ft. Key specifications include: - Minimum and maximum operating relative humidity levels of 5% (non-condensing) and 95% (non-condensing), respectively. - A seismic Zone 4 rating, demonstrating its capability to withstand significant environmental stress. - Acoustic noise level at 52 dBA, ensuring quiet operation conducive to office environments. The Cisco ASR-920-4SZ-D adheres to rigorous compliance standards, including electromagnetic compliance with FCC CFR47 Part 15 Class A and safety specifications such as UL 60950-1, 2nd Edition, and IEC 60950-1, 2nd Edition, among others. It is also NEBS certified, meeting GR-63-CORE and GR-1089-CORE standards, and achieves NEBS Level 4 for SR-3580, highlighting its durability and suitability for use in challenging conditions. In summary, the Cisco ASR-920-4SZ-D is designed for efficiency, reliability, and high performance. Its compact size, combined with its support for high-speed connectivity and compliance with numerous standards, makes it an ideal choice for deploying in service provider and enterprise networks alike.


Part NumberCisco ASR-920-4SZ-D
Operating SystemCisco IOS XE
Interface OptionsTwo Gigabit Ethernet and Four 10 Gigabit Ethernet Ports
Dimensions1.72 x 15.5 x 9.6 inches
Weight7 pounds
Unit Size1 Rack Unit (RU)
Mounting OptionsETSI, 19-inch, and 23-inch Rack Mount Kits
Cooling MethodAir Circulation from Front to Back
Mean Time Between Failures (MTBF)397,400 hours
Energy Consumption75 Watts
Power Input Range-24 to -48 VDC
Lowest Operating Temperature-40°C
Highest Operating Temperature70°C
Operational Elevation LimitUp to 1,000 feet
Operational Humidity Range (Minimum)5% Non-Condensing
Operational Humidity Range (Maximum)95% Non-Condensing
Storage Temperature Range (Low)-40°C
Storage Temperature Range (High)70°C
Maximum Storage Altitude15,000 feet
Seismic ResistanceZone 4
Sound Level52 dBA
Compliance with Electromagnetic StandardsFCC CFR47 Part 15 Class A
Safety Standards ComplianceUL 60950-1, CAN/CSA C22.2 No. 60950-1, IEC 60950-1, EN 60950-1, AS/NZS 60950.1
NEBS CertificationGR-63-CORE, GR-1089-CORE, SR-3580 Level 4
Key CharacteristicsHigh Data Throughput, Compact Size, Efficient Power Usage

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