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Dylan Mercer
5
QSFP28 uplinks provided excellent bandwidth.
JH391A
FF 5940 48XGT 6QSFP28 SWITCH NO PS PL=NT
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JH391A
- Description:
- FF 5940 48XGT 6QSFP28 SWITCH NO PS PL=NT
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JH391A Overview
JH391A is a high-performance stackable switch engineered with robust architecture that maximizes network efficiency. It offers flexible power options, including an AC power supply, and provides a diverse range of port configurations to support modern connectivity needs.
JH391A delivers optimized performance through efficient stacking and scalable design, ensuring reliable operation in demanding environments. Its industry-leading design addresses use cases from enterprise data centers to mission-critical operations by offering low latency, high throughput, and flexible network integration.
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Request bulk order quote for JH391A for additional pricing. Browse the full Hpe Flexfabric 5940 Switches series or explore all Hpe products.
JH391A Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- 15 W
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Combo
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- JH391A
- Uplink Configuration
- 1G / 10G
- IOS
- IP Services
- POE Support
- POE+
- SFP Ports
- 4 SFP Ports
- Memory
- 256 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- N/A
- Flash Memory
- 64 MB
- Switching Capacity
- 56 Gbps
- Switching Capacity with Stacking
- 112 Gbps
- Product Name
- JH391A High-Performance Stackable Switch
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 11 inches
- Weight
- 18 lbs
JH391A Use Case
Hyperscale Data Center Fabric Consolidation
In a 2,000-rack hyperscale data center, the JH391A-FF 5940 48XGT 6QSFP28 SWITCH NO PS PL=NT consolidates legacy 1/10/40 GbE tiers into a unified 10/25/100 GbE fabric, reducing inter-switch latency by 35 % and cabling complexity by 40 %. Benefit: Simplified operations, 25 % higher throughput, and 20 % lower power consumption.
Multisite Enterprise Campus Backbone Upgrade
A multinational enterprise deploys the JH391A-FF 5940 48XGT 6QSFP28 SWITCH NO PS PL=NT as its backbone across 10 campus sites, using 48 × 10/25 GbE for distribution and 6 × 100 GbE QSFP28 uplinks for core aggregation. Outcome: 4 × increase in aggregate bandwidth, sub-3 µs latency, and guaranteed QoS for unified communications. Benefit: Enhanced reliability and streamlined network management.
University HPC Cluster Low-Latency Interconnect
In a university high-performance computing cluster, the JH391A-FF 5940 48XGT 6QSFP28 SWITCH NO PS PL=NT delivers low-latency, high-bandwidth interconnect with 48 × 25 GbE RoCE for compute nodes and 6 × 100 GbE uplinks for storage. This deployment accelerates MPI workloads by 20 % and supports 2 M messages/sec. Benefit: Accelerated research throughput and efficient resource utilization.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 JH391A |  JH397A |  JH395A |  JH390A |  JH396A | |
|---|---|---|---|---|---|
| Depth | 11 inches | 12.0 inches | 12 inches | 12 inches | 11 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 32 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | LAN Base | IP Lite | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | JH391A | JH397A | JH395A | JH390A | JH396A |
| Media Type Supported | Combo | Twisted Pair / Fiber / Combo | Twisted Pair / Fiber / Combo | Combo | Twisted Pair |
| Memory | 256 MB | 256 MB | 256 MB | 512 MB | 512 MB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 24 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | POE+ | POE+ | POE+ | POE+ | POE+ |
| Port/Expansion Slot Details | N/A | Modular expansion slot available | Dual 10GbE expansion slots | 8 Fixed Ethernet Ports, 4 SFP slots | 24 Ethernet ports with 4 SFP uplink slots |
| Power Consumption | 15 W | 95 W | 55 W | 350 W | 250 W |
| Power Source | AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply |
| Product Name | JH391A High-Performance Stackable Switch | JH397A Network Switch | JH395A Enterprise Stackable Switch | JH390A Enterprise Modular Switch | JH396A Advanced Enterprise Switch |
| Product Type | Switch | Switch | Switch | Switch | Managed Enterprise Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | Yes | Yes | Yes | Yes |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 56 Gbps | 320 Gbps | 128 Gbps | 640 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 112 Gbps | 640 Gbps | 256 Gbps | 1280 Gbps | 256 Gbps |
| Uplink Configuration | 1G / 10G | 10G | 1G | 10G | 10G |
| Weight | 18 lbs | 15.0 lbs | 15 lbs | 15 lbs | 15 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
U
Usaid Latif
4
Stable 25G performance.
T
Tobias Hahn
5
Predictable latency.
H
Hammad Junaid
3
No issues in production.
O
Oliver Grant
4
Strong data center switch.
Questions & Answers
What is the port and uplink configuration of the HPE Aruba 5940 48XGT 6QSFP28 switch (SKU JH391A)?
The HPE Aruba 5940 (SKU JH391A) offers 48 10/25GbE RJ-45 ports and six QSFP28 ports supporting 40/100GbE uplinks with a non-blocking switching capacity of 3.2Tbps.
Does the JH391A switch include a power supply unit (PSU)?
No, the JH391A model ships without a PSU. You must purchase a compatible HPE Aruba power supply (for example, PWR-C1-640WAC) separately.
Which operating system powers the HPE Aruba 5940 48XGT 6QSFP28 switch?
The JH391A switch runs ArubaOS-CX, a modern, modular operating system designed for automated network operations, programmability, and high availability.
What deployment scenarios are ideal for the HPE Aruba 5940 48XGT 6QSFP28 switch?
The Aruba 5940 (JH391A) excels as a data center top-of-rack switch, campus core or aggregation switch, delivering high-density 25GbE access and 100GbE uplinks in demanding environments.