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by Hp
Product Line: HP JL078A
Product Type: Switch
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Product Description

The JL078A HP module features a single QSFP+ 40GbE port, supporting 40 Gigabit Ethernet over optical fiber with a network technology of 40GBase-X. It measures 1.1" in height, 2.9" in width, and 5.1" in depth, with a weight of 5.29 oz and is designed for rack-mountable setups. This module operates efficiently with a maximum power rating of 135W (with one PSU), a second PSU power adder of 10W, and has a maximum heat dissipation of 531.96 BTU/hr, supporting PoE power up to 1440W and delivering throughput up to 190.5 Mpps with a routing/switching capacity of 320 Gbps.

Key Feature for the JL078A

  • What is the media type supported by the QSFP+ 40GbE Module?
    The QSFP+ 40GbE Module supports optical fiber.
  • How many ports does the QSFP+ 40GbE Module have?
    It has a total of one port.
  • What Ethernet technology is used in the QSFP+ 40GbE Module?
    The module uses 40 Gigabit Ethernet technology.
  • What is the weight of the QSFP+ 40GbE Module?
    The module weighs 5.29 oz.
  • What type of network technology is the QSFP+ 40GbE Module compatible with?
    It is compatible with 40GBase-X network technology.
  • What are the physical dimensions of the QSFP+ 40GbE Module?
    The module measures 1.1" in height, 2.9" in width, and 5.1" in depth.
  • What is the maximum power rating for the QSFP+ 40GbE Module when used with one PSU?
    The maximum power rating is 135W, with an idle power rating of 103W.
  • How much additional power does the second PSU add?
    The second PSU adds an additional 10W.
  • What is the operating temperature range for the QSFP+ 40GbE Module?
    The operating temperature range is from 32°F to 113°F (0°C to 45°C).
  • What is the maximum throughput of the QSFP+ 40GbE Module?
    The maximum throughput is up to 190.5 Mpps (64-byte packets).

Product Review

The HP JL078A 1QSFP+ 40GbE Module offers a high-speed 40 Gigabit Ethernet connection that is ideal for data-intensive applications, supported by a throughput of up to 190.5 Mpps and switching capacity of 320 Gbps, ensuring efficient data transfer and network performance. However, with only one port available, connectivity options are limited, which may necessitate additional modules for complex network setups. Additionally, its operating temperature range and power consumption are suitable for standard data center environments, but the requirement for a second PSU for redundancy could increase operational costs.


The HP JL078A is a high-performance 1QSFP+ 40GbE Module designed for advanced networking requirements, offering a seamless upgrade to 40 Gigabit Ethernet. Ideal for enterprise networks and data centers, this module enhances connectivity and network efficiency. With support for optical fiber media, it ensures high-speed data transmission over long distances with minimal signal loss. Key specifications include a single port for 40GBase-X network connections, facilitating high-bandwidth applications and providing a robust solution for data-intensive tasks. The module's dimensions are compact, measuring 1.1 inches in height, 2.9 inches in width, and 5.1 inches in depth, making it suitable for rack-mounted installations. Despite its small size, it weighs 5.29 oz, ensuring a stable and secure fit in network racks.
  • Ethernet Technology: 40 Gigabit Ethernet for high-speed data transfer and network efficiency.
  • Interfaces / Ports Details: 1 x 40GBase-X Network, enabling direct connectivity and fast setups.
  • Enclosure Type: Rack-mountable design, ensuring easy integration into existing network infrastructures.
The module operates efficiently, with a maximum and idle power rating (switch + 1 PSU) of 135W and 103W, respectively. The addition of a second PSU increases power by 10W, while the uplink power adder specific to the JL078A is 4W at maximum and 3W at idle. Its maximum heat dissipation is calculated at 531.96 BTU/h, signifying effective energy use and heat management. Designed to support Power over Ethernet (PoE) with a maximum possible power of 1440W, it enables the delivery of power alongside data over the network to devices such as IP cameras and VoIP phones, reducing the need for additional power supplies. The module boasts an impressive throughput of up to 190.5 million packets per second (Mpps) for 64-byte packets, ensuring rapid data processing and transmission. With a routing/switching capacity of 320 Gbps and a switch fabric speed of 338 Gbps, the HP JL078A stands out for its ability to handle massive data flows, making it suitable for high-demand network environments. Its operational efficiency is further highlighted by its capability to function within a temperature range of 32°F to 113°F (0°C to 45°C) and a relative humidity range of 15% to 95% at 104°F (40°C), non-condensing. For non-operational stages, it can withstand temperatures from -40°F to 158°F (-40°C to 70°C), ensuring durability and reliability even in harsh conditions. In conclusion, the HP JL078A 1QSFP+ 40GbE Module is an essential component for any network requiring high-speed, reliable connections and efficient data handling capabilities. Its compact design, combined with superior performance metrics, makes it a valuable addition to enterprise networks and data centers looking to enhance their connectivity and throughput.


Part Number and ManufacturerHP JL078A
Supported Media TypeOptical Fiber
Ethernet Capability40 Gigabit Ethernet
Network Standard40GBase-X
Port Count1
Dimensions (H x W x D)1.1" x 2.9" x 5.1"
Port Interface1 x 40GBase-X Network
Unit Weight5.29 oz
Form FactorRack-mountable
Power Supply Frequency50/60Hz
Power Consumption: Operational/Idle (Switch + 1 PSU)135W/103W
Additional PSU Power Requirement10W
Additional Power for Uplink Module JL078A4W/3W
Heat Output (Maximum Case)531.96 BTU/hr
Maximum PoE Power Capacity1440W
Data Processing RateUp to 190.5 million packets per second (Mpps) for 64-byte packets
Routing and Switching Bandwidth320 Gbps
Internal Data Transfer Rate338 Gbps
Operational Temperature Range32°F to 113°F (0°C to 45°C)
Operational Humidity Range15% to 95% @ 104°F (40°C), non-condensing
Temperature Range, Non-operational-40°F to 158°F (-40°C to 70°C)

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