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by Cisco
Product Line: Cisco Catalyst
Product Type: Switch
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Product Description

The WS-C3850-48XS-F-S Cisco switch features 48 SFP+ ports and 4 QSFP ports in a 1 RU form factor, designed for high-density deployments. It operates with a 750 WAC power supply and supports back-to-front airflow, maintaining optimal performance within operating temperatures of -5 °C to 45 °C. With a Mean Time Between Failures (MTBF) of 286,900 hours, it ensures reliable operation in environments up to 5000 ft altitude with AC power supply, adhering to Rohs-5 compliance and multiple safety certifications.

Key Feature for the WS-C3850-48XS-F-S

  • What is the total number of ports available on this networking device?
    There are 52 ports in total, including 48 SFP+ and 4 QSFP ports.
  • Does the device support stackable configuration?
    No, it is designed for standalone operation and does not support stacking.
  • What power supply wattage does the device require?
    The device requires a 750 WAC power supply.
  • What are the minimum and maximum operating temperatures for this device?
    The minimum operating temperature is -5 °C, and the maximum operating temperature is 45 °C.
  • What is the form factor of the device?
    The form factor is 1 RU.
  • Can the device be used in environments with high humidity?
    Yes, it can operate in environments with a humidity range from 10% (noncondensing) to 95% (noncondensing).
  • What is the Mean Time Between Failures (MTBF) for this device?
    The MTBF is 286,900 hours.
  • Is the device RoHS compliant?
    Yes, it complies with RoHS-5 standards.
  • What are the noise specifications of the device?
    The noise level is 44 dBA at 30 °C.
  • What safety certifications does the device hold?
    It holds the following safety certifications: UL 60950-1 Second Edition, CAN/CSA-C22.2 No. 60950-1 Second Edition, EN 60950-1 Second Edition, and IEC 60950-1 Second Edition.

Product Review

The Cisco WS-C3850-48XS-F-S offers 48 SFP+ and 4 QSFP ports, catering to high-density fiber connectivity needs, but lacks stackability, limiting its scalability in growing network environments. With a 750 WAC power supply and back-to-front airflow, it ensures efficient cooling and reliable performance under a broad operating temperature range (-5 °C to 45 °C). However, its absence of support for additional network modules and a standalone design may restrict flexibility and expansion options for complex network setups.


The Cisco WS-C3850-48XS-F-S is a specialized networking device designed to meet the needs of modern data centers and enterprise networks. This compact 1 rack unit (RU) switch offers a blend of performance, scalability, and reliability, making it an ideal choice for demanding network environments. With its advanced feature set and hardware specifications, this switch is engineered to support a wide range of applications, from advanced data center operations to high-speed networking tasks. At the core of its design, the switch features 52 ports, including 48 SFP+ ports and 4 QSFP ports, providing ample connectivity options for high-speed networking requirements. The SFP+ ports allow for flexible fiber connections, supporting speeds up to 10 Gbps, while the QSFP ports are designed for higher bandwidth needs, offering up to 40 Gbps per port. This configuration ensures that the switch can handle intensive data traffic, making it suitable for environments where data throughput and connectivity are critical. The switch is powered by a 750 WAC power supply, ensuring efficient power delivery for its operations. The airflow design is back-to-front, optimizing cooling and reliability even under heavy load conditions. Despite its high performance, the device maintains a compact form factor, measuring only 1.75 x 17.5 x 20.1 inches and weighing 16.42 lbs. This makes it easy to integrate into various rack setups without occupying excessive space. Key specifications include: - MTBF (Mean Time Between Failures) of 286,900 hours, indicating a high reliability and durability over prolonged use. - Operating temperature range from -5 °C to 45 °C, allowing for deployment in a wide variety of environmental conditions. - Compliance with multiple safety and environmental standards, including RoHS-5 and safety certifications such as UL 60950-1 and EN 60950-1, ensuring the switch meets strict safety and environmental guidelines. The switch is designed to operate efficiently across different altitudes, with an operating altitude up to 5000 ft with AC power supply and up to 6000 ft with DC power supply. It can withstand a wide range of humidity levels, from 10% to 95% noncondensing, and temperature ranges for storage from -40 °C to 70 °C. This robust operational range makes the switch versatile for various installation locations. Vibration and noise levels are also carefully managed. The operating vibration is rated at 0.41 g from 3 to 500 Hz, and the non-operating vibration at 1.12 g from the same frequency range, ensuring stability in different operational scenarios. The noise specification stands at 44 dBA at 30 °C, minimizing acoustic output for quieter operation environments. The Cisco WS-C3850-48XS-F-S is a standalone switch, meaning it is not stackable, focusing on delivering high-density connectivity without the need for stacking. This design choice emphasizes its role in networks where a single, high-capacity switch is preferable to multiple stacked units. Despite this, its performance and specifications make it a powerful component in any network infrastructure, capable of supporting a wide array of networking modules and applications without the need for stacking.


Item NumberCisco WS-C3850-48XS-F-S
Total Ports52
Port Configuration48 SFP+ ports, 4 QSFP ports
Software VersionIP Base
Power Supply Capacity750 Watts AC
Cooling DirectionBack-to-Front
Device Size1 Rack Unit
Configuration TypeStandalone, Not Stackable
Expansion ModulesNot Supported
Dimensions1.75 x 17.5 x 20.1 inches
Device Weight16.42 pounds
Mean Time Between Failures286,900 hours
Operational Temperature Range (Min)-5 °C
Operational Temperature Range (Max)45 °C
Max Altitude with AC Power5000 feet
Max Altitude with DC Power6000 feet
Humidity Range for Operation (Min)10% Non-condensing
Humidity Range for Operation (Max)95% Non-condensing
Storage Temperature Range (Min)-40 °C
Storage Temperature Range (Max)70 °C
Max Storage Altitude15,000 feet
Vibration During Operation0.41 g (3 to 500 Hz)
Vibration When Not in Operation1.12 g (3 to 500 Hz)
Acoustic Noise Level at 30 °C44 dBA
Compliance with RoHSRoHS-5
Safety StandardsUL 60950-1, CAN/CSA-C22.2 No. 60950-1, EN 60950-1, IEC 60950-1 (all Second Edition)

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