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by Hp
Product Line: HP 3800 Switch Series
Product Type: Switch
Sold out
Original price $0.00 - Original price $324.00
Original price
$0.00 - $324.00
Current price $0.00
Title: Surplus

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Product Description

The J9478A HP networking module features 24 PoE+ Twisted Pair ports with a 10/100 Base-TX port capacity, suitable for supporting Category 5 or better 100-Ohm UTP or STP cables. It employs an RJ-45 connector type within a zl module type, designed for versatility and connectivity. Operating conditions range from 0 °C to 45 °C with humidity tolerance from 15% to 95% non-condensing, and it can function up to a 10,000 ft altitude, ensuring reliable performance across various environments.

Key Feature for the J9478A

  • What is the port capacity of the networking hardware?
    The port capacity is 10/100 Base-TX.
  • Can the zl module support Power over Ethernet (PoE)?
    Yes, the module supports PoE+ on twisted pair RJ-45 connectors.
  • What type of cables can be used with this hardware?
    It supports Category 5 or better 100-Ohm UTP or STP cables.
  • What is the operating temperature range for the device?
    The operating temperature range is from 0 °C to 40 °C.
  • What are the non-operating temperature extremes the device can handle?
    The device can handle non-operating temperatures from -40 °C to 70 °C.
  • How does the module manage humidity?
    The module operates at 15% (non-condensing) minimum relative humidity and can withstand up to 95% maximum non-operating relative humidity.
  • What is the maximum operating altitude for the networking module?
    The maximum operating altitude is 10,000 feet.
  • Is the device compatible with all RJ-45 connectors?
    Yes, it is compatible with RJ-45 connectors for PoE+ twisted pair cables.
  • What is the maximum non-operating altitude the hardware can tolerate?
    The maximum non-operating altitude is 15,000 feet.
  • How many ports does the module have and what type are they?
    The module has 24 ports, all of which are PoE+ twisted pair types.

Product Review

The HP J9478A offers 24 PoE+ ports with 10/100 Base-TX capacity, suitable for small to medium-sized network deployments requiring power over Ethernet. However, the limitation to 10/100 Base-TX speeds may not meet the needs of environments requiring gigabit connectivity for high-speed data transfer. It supports Category 5 or better cables and operates reliably within a wide range of temperatures and humidity levels, ensuring durability in various operating conditions.


The HP J9478A is a networking module designed to enhance connectivity and power delivery for businesses and enterprises. This module features 24 ports with PoE+ (Power over Ethernet Plus) capability, allowing for both data and power to be delivered over a single twisted pair cable. This design simplifies the network infrastructure by reducing the need for additional power supplies and wiring, making it an efficient solution for deploying devices like VoIP phones, wireless access points, and surveillance cameras. Each of the 24 ports on the HP J9478A supports 10/100 Base-TX connectivity, ensuring compatibility with a wide range of network devices while providing sufficient bandwidth for typical office and enterprise applications. The ports utilize RJ-45 connectors, a standard in networking that guarantees compatibility with a broad array of networking equipment. To ensure reliable performance, the module requires Category 5 or better 100-Ohm UTP or STP cables, a specification that ensures minimal signal degradation over distances and maintains the integrity of data transmission. The HP J9478A belongs to the zl module type, a classification that hints at its compatibility with HP's modular switch chassis. This allows for easy integration into existing network setups, providing a seamless upgrade path for expanding network capabilities or replacing outdated modules without the need for a complete system overhaul.
  • Minimum Operating Temperature: 0 °C, ensuring the module operates efficiently even in cold environments.
  • Maximum Operating Temperature: 40 °C, allowing for deployment in various conditions without the risk of overheating.
  • Maximum Operating Altitude: 10,000 ft, enabling installation in high-altitude locations without affecting performance.
For environments not actively using the module, it has a wide range of non-operating temperature tolerance, from -40 °C to 70 °C, ensuring that the module remains undamaged in storage conditions that may experience extreme temperatures. The device is also designed to withstand non-operating relative humidity levels from 15% to 95% non-condensing, and up to 90% for operating conditions, making it suitable for use in a variety of climates without concern for moisture-induced damage. Additionally, the HP J9478A can be installed in locations up to 15,000 ft in altitude without operational concerns when not in use, providing flexibility in storage options for organizations located in or near mountainous regions. In summary, the HP J9478A is a versatile and efficient networking module that simplifies infrastructure, supports high-speed connectivity, and is resilient under a variety of environmental conditions. Its design and specifications ensure that it can meet the needs of modern businesses looking to maintain or expand their networking capabilities with minimal disruption and maximum reliability.


Item Number HP J9478A
Manufacturer HP
Total Ports 24
Port Specification PoE+ Ethernet
Speed Rating 10/100 Mbps
Module Classification zl Series
Connection Interface RJ-45
Compatible Cable Types Cat 5 or higher, 100-Ohm UTP or STP
Lowest Operating Temperature 0 °C
Highest Operating Temperature 45 °C
Lowest Storage Temperature -40 °C
Highest Storage Temperature 70 °C
Operating Humidity Range 15% to 95%, non-condensing
Storage Humidity Range 15% to 90%, non-condensing
Operational Maximum Elevation 10,000 ft
Storage Maximum Elevation 15,000 ft

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