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PoE+ model handled powered devices reliably.
JG309B
HPE 5120 8G PoE+ (180W) SI Switch
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JG309B
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- HPE 5120 8G PoE+ (180W) SI Switch
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JG309B Overview
JG309B is a cutting-edge network switch engineered with a modular and scalable architecture to meet the rigorous demands of modern enterprise networks. It features multiple power options, including an integrated AC power supply with redundant support, ensuring high reliability while efficiently managing traffic across diverse network segments.
The device comes equipped with a versatile port configuration offering 24–48 Ethernet ports alongside 4 SFP uplink ports supporting 10G connectivity. Designed for high performance and seamless stacking, JG309B delivers a robust switching capacity and enhanced scalability for data centers, campus environments, and other high-demand network applications.
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Request bulk order quote for JG309B for additional pricing. Browse the full Hpe Flexnetwork 5120 Si Switches series or explore all Hpe products.
JG309B Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- 85 W
- Number of Ethernet Ports
- 24–48 Ports
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- JG309B
- Uplink Configuration
- 10G
- IOS
- IP Services
- POE Support
- POE+
- SFP Ports
- 4 SFP Ports
- Memory
- 512 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 24 Ethernet ports and 4 SFP uplink ports
- Flash Memory
- 256 MB
- Switching Capacity
- 640 Gbps
- Switching Capacity with Stacking
- 1.28 Tbps
- Product Name
- JG309B High-Performance Network Switch
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 12 inches
- Weight
- 15 lbs
JG309B Use Case
High-Density PoE+ Deployment in Corporate Offices
In a multi-floor corporate headquarters, IT teams deploy the JG309B-HPE 5120 8G PoE+ (180W) SI Switch to power 30+ Wi-Fi 6 access points, IP phones and security cameras using a single 180W PoE budget. The switch’s Smart Rate and VLAN segmentation simplify network design and ensure voice/data separation. Outcome: streamlined cabling, centralized PoE management and 99.99% uptime for unified communications.
Retail Edge Security and IoT Integration
A nationwide retail chain leverages the JG309B-HPE 5120 8G PoE+ (180W) SI Switch at each store’s network closet to power IP surveillance cameras, digital signage and Bluetooth foot-traffic sensors. With built-in LLDP-MED and QoS prioritization, the switch guarantees reliable video streams and real-time analytics. Outcome: enhanced loss prevention, actionable customer insights and faster IoT deployments with zero downtime.
Industrial Automation with Redundant Connectivity
In a precision-manufacturing plant, engineers install the JG309B-HPE 5120 8G PoE+ (180W) SI Switch on the factory floor to supply power and data to PLCs, safety sensors and wireless HMI panels. Integrated Smart Link and Rapid Ring technologies deliver sub-50ms failover between uplinks. Outcome: deterministic network performance, reduced unplanned downtime and simplified remote diagnostics for critical automation lines.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 JG309B |  JE072B |  JE074B |  JE073B |  JG091B | |
|---|---|---|---|---|---|
| Depth | 12 inches | 12 inches | 14 inches | 10 inches | 12 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 64 MB | 32 MB | 32 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1 inch | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | IP Services | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 3 | Layer 2 / Layer 3 | Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | JG309B | JE072B | JE074B | JE073B | JG091B |
| Media Type Supported | Twisted Pair | Combo | Combo | Twisted Pair | Combo |
| Memory | 512 MB | 256 MB | 256 MB | 256 MB | 256 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 | 24 Ethernet ports and 4 SFP uplink ports | 2 expansion slots | Modular uplink expansion slots available for additional SFP modules | N/A | 24 fixed Ethernet ports and 4 dedicated SFP uplink slots |
| Power Consumption | 85 W | 150W | 150 W | N/A | 35 W |
| Power Source | AC Power Supply | Redundant Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | JG309B High-Performance Network Switch | JE072B Enterprise Modular Switch | JE074B Enterprise Network Switch | JE073B Enterprise Switch | JG091B Enterprise Managed Switch |
| Product Type | Switch | Switch | Switch | Switch | 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 | 640 Gbps | 320 Gbps | 320 Gbps | N/A | 176 Gbps |
| Switching Capacity with Stacking | 1.28 Tbps | 640 Gbps | 640 Gbps | N/A | 352 Gbps |
| Uplink Configuration | 10G | 10G | 10G | 1G | 10G |
| Weight | 15 lbs | 15 lbs | 15 lbs | 5 lbs | 12 lbs |
| Width | 17.5 inches | 17 inches | 17.5 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
H
Haris Nawaz
4
Stable performance for access points.
E
Erik Sund
5
Good power budget and uptime.
F
Faheem Raza
3
Worked well in branch deployment.
C
Colin Reed
4
Dependable PoE switch.
Questions & Answers
What is the HPE 5120 8G PoE+ (180W) SI Switch (SKU: JG309B)?
The HPE 5120 8G PoE+ (180W) SI Switch is a stackable, Layer 2+ managed Gigabit Ethernet switch offering eight PoE+ ports with a total 180W power budget, ideal for small to medium business networks.
How many ports does the JG309B switch provide?
The JG309B features eight 10/100/1000 Mbps RJ-45 PoE+ ports and two dedicated 10 GbE SFP+ uplink ports for high-speed aggregation.
What is the maximum PoE+ power budget of this switch?
This switch delivers up to 180 W of total PoE+ power, supporting up to eight PDs at 30 W each for devices like IP phones and wireless access points.
Which Layer 2 and Layer 3 features are supported?
It supports Layer 2 switching (VLAN, Spanning Tree, QoS) plus basic Layer 3 functions such as static routing, RIP, and DHCP relay for flexible traffic management.