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by Hp
Product Line: HP JG300B
Product Type: Switch
Sold out
Original price $0.00 - Original price $602.00
Original price
$0.00 - $602.00
Current price $602.00
Title: Surplus

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Product Description

The JG300B HP switch features 48 RJ-45 autosensing 10/100 ports compliant with IEEE 802.3 Type 10BASE-T and IEEE 802.3u Type 100BASE-TX standards, along with 4 SFP 1000 Mb/s ports and 2 dual-personality 1000 Mb/s ports (IEEE 802.3ab Type 1000BASE-T). It is designed for easy installation in an EIA-standard 19-inch rack with dimensions of 17.32(w) x 10.24(d) x 1.72(h) inches and a weight of 11.02 lb. Operating within a temperature range of 32°F to 122°F and a humidity range of 5% to 95% noncondensing, it has a maximum power rating of 43 W and supports a voltage range of 100–240 VAC and -48 to -60 VDC.

Key Feature for the JG300B

  • What types of ports does the device feature for networking?
    The device includes 48 RJ-45 autosensing 10/100 ports, 4 SFP 1000 Mb/s ports, 2 dual-personality 1000 Mb/s ports, and 1 RJ-45 serial console port.
  • How is the device mounted in a rack?
    It mounts in an EIA-standard 19 in. Telco rack or equipment cabinet with the included hardware.
  • What are the physical dimensions of the device?
    The device measures 17.32(w) in x 10.24(d) in x 1.72(h) in, fitting in a 1U rack space.
  • What is the operating temperature range of the device?
    The operating temperature range is from 32°F to 122°F (0°C to 50°C).
  • Can the device support both half and full duplex on its RJ-45 ports?
    Yes, the RJ-45 autosensing ports support both half and full duplex.
  • What is the device's weight?
    The device weighs 11.02 lb (5 kg).
  • What are the nonoperating temperature and humidity ranges?
    The nonoperating temperature range is from -40°F to 158°F (-40°C to 70°C), and the relative humidity range is 5% to 95%, noncondensing.
  • What power specifications does the device require?
    The device requires a voltage of 100–240 VAC, DC voltage of -48 to -60 VDC, and has a maximum power rating of 43 W.
  • What is the maximum heat dissipation of the device?
    The maximum heat dissipation is 147 BTU/hr (155.08 kJ/hr).
  • What are the acoustic levels for the device's fans?
    The low-speed fan operates at 44.7 dB, and the high-speed fan at 53.8 dB.

Product Review

The HP JG300B switch offers a versatile array of connectivity options, including 48 RJ-45 autosensing 10/100 ports, 4 SFP 1000 Mb/s ports, and 2 dual-personality 1000 Mb/s ports, accommodating a range of networking needs. However, its reliance on 10/100 ports may limit bandwidth for applications requiring higher throughput. The device's compact design, suitable for standard 19-inch racks, and its operational temperature range make it adaptable to various installation environments, yet its noise level, with a high-speed fan reaching up to 53.8 dB, could be a concern in quieter office settings.


The HP JG300B is a networking switch designed for efficient handling of data across a network. It features a comprehensive set of ports and connectivity options to accommodate various networking requirements. With 48 RJ-45 autosensing 10/100 ports supporting IEEE 802.3 Type 10BASE-T and IEEE 802.3u Type 100BASE-TX, the device ensures compatibility with a wide range of Ethernet technologies. Additionally, it is equipped with 4 SFP 1000 Mb/s ports and 2 dual-personality 1000 Mb/s ports (IEEE 802.3ab Type 1000BASE-T), enhancing its capacity for high-speed data transmission. A single RJ-45 serial console port is included for management and setup, facilitating easy configuration and maintenance. The physical dimensions of the HP JG300B, standing at 17.32 inches in width, 10.24 inches in depth, and 1.72 inches in height, make it a compact solution that fits comfortably in a 1U rack space. This size efficiency does not come at the expense of performance, as the device weighs 11.02 lb (5 kg) and is designed for easy installation in an EIA-standard 19-inch telco rack or equipment cabinet, with mounting hardware included. Operationally, the HP JG300B is designed to function within a broad range of environmental conditions. It operates effectively at temperatures ranging from 32°F (0°C) to 122°F (50°C) and can withstand non-operating temperatures from -40°F (-40°C) to 158°F (70°C). The device's operational humidity range is from 5% to 95% non-condensing, ensuring reliability in various atmospheric conditions. Furthermore, the switch's storage conditions mirror its operational tolerances, maintaining integrity between 5% and 95% non-condensing humidity. The HP JG300B incorporates a dual-speed fan system to manage its thermal output efficiently, with noise levels of 44.7 dB in low-speed mode and 53.8 dB at high speed, ensuring a relatively quiet operation. It requires a power supply of 100–240 VAC or -48 to -60 VDC, with a maximum power rating of 43 W. The device's maximum heat dissipation stands at 147 BTU/hr (155.08 kJ/hr), indicative of its energy efficiency and the effectiveness of its cooling systems. Operating at a frequency of 50/60 Hz, the HP JG300B is adaptable to various electrical systems, making it suitable for deployment in diverse geographical locations. Key features include: -
  • 48 RJ-45 autosensing 10/100 ports and 6 high-speed connectivity ports
  • Compact 1U design for efficient rack mounting
  • Energy-efficient operation with a maximum power rating of 43 W
Designed for reliability and efficiency, the HP JG300B meets the needs of modern networks, offering scalability and high-speed connectivity options in a compact, rack-mountable form factor. Whether deployed in small business environments or integrated into larger enterprise networks, this switch provides a solid foundation for data communication and network management tasks.


Item Number and Maker HP JG300B
Interface Quantity 48 RJ-45 autosensing 10/100 interfaces (compliant with IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX), 4 SFP 1000 Mb/s interfaces, 2 dual-personality 1000 Mb/s interfaces (compliant with IEEE 802.3ab Type 1000BASE-T), 1 RJ-45 serial configuration interface
Interface Duplexing Supports both half and full duplex
Physical Dimensions Width: 17.32 in. (43.99 cm), Depth: 10.24 in. (26.01 cm), Height: 1.72 in. (4.37 cm), all within 1U rack unit
Device Weight 11.02 lb (5 kg)
Installation Option Compatible with EIA-standard 19 in. telco racks or cabinets, mounting hardware provided
Operational Temperature Range Minimum: 32°F (0°C), Maximum: 122°F (50°C)
Relative Humidity While Operating 5% to 95%, noncondensing
Temperature Range When Stored Minimum: -40°F (-40°C), Maximum: 158°F (70°C)
Relative Humidity When Stored 5% to 95%, noncondensing
Noise Level Low-speed fan: 44.7 dB, High-speed fan: 53.8 dB
Electricity Frequency 50/60 Hz
Heat Release 147 BTU/hr (155.08 kJ/hr)
Input Voltage 100–240 VAC
Input DC Voltage -48 to -60 VDC
Energy Consumption Maximum 43 W

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