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Overview
The HP J9855A is a networking switch designed to meet the demands of modern business environments, offering a combination of performance, scalability, and efficiency. This product overview focuses on the hardware specifications that contribute to its functionality and reliability in various networking scenarios.
At the core of its connectivity options, the HP J9855A features 48 RJ-45 autosensing 10/100/1000 ports supporting standards such as IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, and IEEE 802.3ab Type 1000BASE-T. These ports enable the switch to automatically adjust for the optimal speed and duplex, with 10BASE-T/100BASE-TX supporting half or full duplex and 1000BASE-T supporting full duplex only. Additionally, the switch includes 2 SFP+ fixed ports that support both 1000 Mbps and 10 Gbps connections, providing flexibility for uplink or stacking purposes.
A notable feature is the dual-personality serial console port, which can function as an RJ-45 or USB micro-B port. This versatility aids in the easy management and configuration of the switch, catering to various operational preferences.
- Dimensions: The HP J9855A has a compact form factor, with dimensions of 44.3 cm in width, 25.4 cm in depth, and a height of 4.45 cm, conforming to the standard 1U height for rack mounting.
- Weight: It weighs approximately 3.08 kg (7.1 lb), making it relatively lightweight and easy to handle during installation or maintenance.
- Power Specifications: The switch operates within a voltage range of 100 - 127 / 200 - 240 V ac, with a current draw of 0.9/0.5 A depending on the voltage. It has an idle power consumption of 33.3 W and a maximum power rating of 55.1 W. The maximum heat dissipation is rated at 189 BTU/hr.
Environmental tolerances include a wide operating temperature range from 0° C (32° F) to 45°C (113°F) and a non-operating temperature range from -40° C (-40° F) to 70°C (158°F). The switch is designed to operate reliably within a relative humidity range of 15% to 95% at 40°C (104°F), ensuring performance stability in varied environmental conditions. Furthermore, it can be operated or stored at altitudes up to 3 kilometers (10,000 feet), accommodating installations in diverse geographical locations.
Acoustic levels are modest, with an acoustic power of 32.2 dB and pressure of 25.6 dB, indicating that the switch operates relatively quietly, a beneficial attribute for deployments in noise-sensitive areas such as offices.
In summary, the HP J9855A switch is engineered to deliver reliable, high-speed network connectivity and is equipped with features that support efficient network management and scalability. Its physical and environmental specifications ensure that it can be deployed in a broad range of settings, maintaining operational integrity under a variety of conditions.
Specs
| Part Number | HP J9855A |
| Manufacturer | HP |
| Interface | 48 x RJ-45 autosensing ports for 10/100/1000 Mbps (compliant with IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T) |
| Port Duplex Capabilities | Half/full duplex for 10BASE-T/100BASE-TX; full duplex for 1000BASE-T |
| High-speed Ports | 2 fixed SFP+ slots supporting 1G/10G |
| Console Port | 1 adaptable interface (RJ-45 or USB micro-B) for serial connections |
| Width | 44.3 cm (Standard 1U rack width) |
| Depth | 25.4 cm (Standard 1U rack depth) |
| Height | 4.45 cm (Standard 1U rack height) |
| Weight | 3.08 kg |
| Heat Output | 189 BTU/hr (199.4 kJ/hr) |
| Input Voltage | 100 - 127 / 200 - 240 V AC |
| Electrical Current | 0.9/0.5 A |
| Idle Consumption | 33.3 W |
| Peak Power Consumption | 55.1 W |
| Operational Frequency | 50/60 Hz |
| Minimum Operating Temperature | 0°C (32°F) |
| Maximum Operating Temperature | 45°C (113°F) |
| Operational Humidity Range (Minimum) | 15% at 40°C (104°F), non-condensing |
| Operational Humidity Range (Maximum) | 95% at 40°C (104°F), non-condensing |
| Storage Temperature Range (Minimum) | -40°C (-40°F) |
| Storage Temperature Range (Maximum) | 70°C (158°F) |
| Storage Humidity Range | 15% to 90% at 65°C (149°F), non-condensing |
| Maximum Altitude | Up to 3 km (10,000 ft) |
| Acoustic Emission (Power/Pressure) | 32.2 dB / 25.6 dB |
J9855A
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Product Description
The J9855A HP features 48 RJ-45 autosensing 10/100/1000 ports supporting IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, and IEEE 802.3ab Type 1000BASE-T standards, alongside 2 SFP+ fixed 1000/10000 ports and a dual-personality (RJ-45 or USB micro-B) serial console port for versatile connectivity options. This device is designed for efficiency with a maximum power rating of 55.1 W and an idle power consumption of 33.3 W, within a compact form factor of 44.3 cm width, 25.4 cm depth, and 4.45 cm height, weighing 3.08 kg. It operates effectively within a temperature range of 0°C to 45°C and up to 95% non-condensing humidity, ensuring reliability in various environmental conditions.Key Feature for the J9855A
- What are the types of ports available on this networking hardware?
The hardware includes 48 RJ-45 autosensing 10/100/1000 ports, 2 SFP+ fixed 1000/10000 ports, and 1 dual-personality serial console port (RJ-45 or USB micro-B). - How does the duplex setting vary across different port types?
10BASE-T/100BASE-TX supports half or full duplex, while 1000BASE-T supports full duplex only. - What are the dimensions and weight of this device?
The dimensions are 44.3 cm (W) x 25.4 cm (D) x 4.45 cm (H) with a weight of 3.08 kg. - Can you provide the power specifications for the hardware?
It operates at 100 - 127 / 200 - 240 V ac, with a current of 0.9/0.5 A, idle power of 33.3 W, and a maximum power rating of 55.1 W. - What is the hardware's operating temperature range?
The operating temperature ranges from 0°C to 45°C. - What are the non-operating storage temperature and humidity ranges?
Storage temperature ranges from -40°C to 70°C with a relative humidity of 15% to 90% at 65°C, noncondensing. - What is the maximum altitude at which the hardware can operate?
The hardware can operate at altitudes up to 3 km (10,000 ft). - What are the acoustic levels for this product?
Acoustic power is 32.2 dB and pressure is 25.6 dB. - What is the maximum heat dissipation of the device?
The maximum heat dissipation is 189 BTU/hr (199.4 kJ/hr). - What are the operating and non-operating relative humidity levels?
Operating relative humidity is 15% to 95% at 40°C, noncondensing. Non-operating/storage relative humidity is 15% to 90% at 65°C, noncondensing.
Product Review
The HP J9855A switch offers a comprehensive range of connectivity options, including 48 RJ-45 autosensing 10/100/1000 ports and 2 SFP+ ports for high-speed connections, catering to diverse network requirements. However, its operational temperature range is limited to 0-45°C, potentially restricting deployment in environments with extreme temperatures. Additionally, while the switch's power efficiency is highlighted by a maximum power rating of 55.1 W, organizations with high-density deployments might find the lack of modular power options a limitation.
Overview
The HP J9855A is a networking switch designed to meet the demands of modern business environments, offering a combination of performance, scalability, and efficiency. This product overview focuses on the hardware specifications that contribute to its functionality and reliability in various networking scenarios.
At the core of its connectivity options, the HP J9855A features 48 RJ-45 autosensing 10/100/1000 ports supporting standards such as IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, and IEEE 802.3ab Type 1000BASE-T. These ports enable the switch to automatically adjust for the optimal speed and duplex, with 10BASE-T/100BASE-TX supporting half or full duplex and 1000BASE-T supporting full duplex only. Additionally, the switch includes 2 SFP+ fixed ports that support both 1000 Mbps and 10 Gbps connections, providing flexibility for uplink or stacking purposes.
A notable feature is the dual-personality serial console port, which can function as an RJ-45 or USB micro-B port. This versatility aids in the easy management and configuration of the switch, catering to various operational preferences.
- Dimensions: The HP J9855A has a compact form factor, with dimensions of 44.3 cm in width, 25.4 cm in depth, and a height of 4.45 cm, conforming to the standard 1U height for rack mounting.
- Weight: It weighs approximately 3.08 kg (7.1 lb), making it relatively lightweight and easy to handle during installation or maintenance.
- Power Specifications: The switch operates within a voltage range of 100 - 127 / 200 - 240 V ac, with a current draw of 0.9/0.5 A depending on the voltage. It has an idle power consumption of 33.3 W and a maximum power rating of 55.1 W. The maximum heat dissipation is rated at 189 BTU/hr.
Environmental tolerances include a wide operating temperature range from 0° C (32° F) to 45°C (113°F) and a non-operating temperature range from -40° C (-40° F) to 70°C (158°F). The switch is designed to operate reliably within a relative humidity range of 15% to 95% at 40°C (104°F), ensuring performance stability in varied environmental conditions. Furthermore, it can be operated or stored at altitudes up to 3 kilometers (10,000 feet), accommodating installations in diverse geographical locations.
Acoustic levels are modest, with an acoustic power of 32.2 dB and pressure of 25.6 dB, indicating that the switch operates relatively quietly, a beneficial attribute for deployments in noise-sensitive areas such as offices.
In summary, the HP J9855A switch is engineered to deliver reliable, high-speed network connectivity and is equipped with features that support efficient network management and scalability. Its physical and environmental specifications ensure that it can be deployed in a broad range of settings, maintaining operational integrity under a variety of conditions.
Specifications
| Part Number | HP J9855A |
| Manufacturer | HP |
| Interface | 48 x RJ-45 autosensing ports for 10/100/1000 Mbps (compliant with IEEE 802.3 Type 10BASE-T, IEEE 802.3u Type 100BASE-TX, IEEE 802.3ab Type 1000BASE-T) |
| Port Duplex Capabilities | Half/full duplex for 10BASE-T/100BASE-TX; full duplex for 1000BASE-T |
| High-speed Ports | 2 fixed SFP+ slots supporting 1G/10G |
| Console Port | 1 adaptable interface (RJ-45 or USB micro-B) for serial connections |
| Width | 44.3 cm (Standard 1U rack width) |
| Depth | 25.4 cm (Standard 1U rack depth) |
| Height | 4.45 cm (Standard 1U rack height) |
| Weight | 3.08 kg |
| Heat Output | 189 BTU/hr (199.4 kJ/hr) |
| Input Voltage | 100 - 127 / 200 - 240 V AC |
| Electrical Current | 0.9/0.5 A |
| Idle Consumption | 33.3 W |
| Peak Power Consumption | 55.1 W |
| Operational Frequency | 50/60 Hz |
| Minimum Operating Temperature | 0°C (32°F) |
| Maximum Operating Temperature | 45°C (113°F) |
| Operational Humidity Range (Minimum) | 15% at 40°C (104°F), non-condensing |
| Operational Humidity Range (Maximum) | 95% at 40°C (104°F), non-condensing |
| Storage Temperature Range (Minimum) | -40°C (-40°F) |
| Storage Temperature Range (Maximum) | 70°C (158°F) |
| Storage Humidity Range | 15% to 90% at 65°C (149°F), non-condensing |
| Maximum Altitude | Up to 3 km (10,000 ft) |
| Acoustic Emission (Power/Pressure) | 32.2 dB / 25.6 dB |