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Caleb Harding
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Front to back airflow matched our switch design.
JPSU-350-AC-AFO
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350W AC PWR SUP FRONT TO BACK AIRFLOW FOR EX4300
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Name:
JPSU-350-AC-AFO
- Description:
- 350W AC PWR SUP FRONT TO BACK AIRFLOW FOR EX4300
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Juniper
- GTIN:
- 660169585956
- Condition:
- Warranty:
- 3
- List Price:
$500.76
- Price:
$125.2075% off
Quantity:
1
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JPSU-350-AC-AFO Overview
JPSU-350-AC-AFO is a 400W power supply designed with robust build quality and reliability in mind. Engineered in the ATX form factor and backed by an 80 PLUS Bronze certification, it delivers powerful performance on an input voltage of 100–240V with Active PFC for efficient power conversion.
Built as a non-modular unit, the JPSU-350-AC-AFO features an 80mm fan with a sleeve bearing that ensures effective cooling while maintaining low noise levels. It comes equipped with comprehensive protections—including OCP, OVP, SCP, and OTP—and offers a variety of connectors such as one ATX 24-pin, one EPS 4+4 pin, and two SATA power outputs, making it ideally suited for gaming, workstation, and general use systems.
JPSU-350-AC-AFO price is $125.20, a 75% saving from the Juniper list price of $500.76. JPSU-350-AC-AFO is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for JPSU-350-AC-AFO for additional pricing. Browse the full Juniper Power Supplies series or explore all Juniper products.
JPSU-350-AC-AFO Specifications
- Product Type
- Power Supply
- Wattage
- 400W
- Use Case
- Gaming / Workstation / General Use
- Form Factor
- ATX
- Modularity
- Non-Modular
- 80 PLUS Certification
- Bronze
- Rail Configuration
- Single Rail
- Certifications
- 80 PLUS / CE / FCC / UL / ROHS
- Remote Monitoring
- No
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 80mm
- Fan Bearing Type
- Sleeve
- Zero RPM Mode
- Yes
- Efficiency Rating
- 87%
- Protections
- OCP / OVP / SCP / OTP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 1
- PCIe (6+2) Connectors
- N/A
- SATA Power Connectors
- 2
- Molex Connectors
- 1
- Floppy Connector
- No
- Cable Type
- Flat
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 100,000 hours
- Operating Temperature
- 50°C
- Product Name
- JPSU-350-AC-AFO Power Supply Unit
- Height
- 3.5 inches
- Width
- 5.5 inches
- Depth
- 5.9 inches
- Weight
- 3.5 lbs
JPSU-350-AC-AFO Use Case
N+1 Redundant Core Switching with JPSU-350-AC-AFO-350W AC PWR SUP for EX4300
A global financial services firm deploys the JPSU-350-AC-AFO-350W AC PWR SUP in EX4300 core switches to achieve N+1 power redundancy and front-to-back airflow alignment in its primary data center. Outcome: 350W efficient power delivery, seamless failover and consistent cooling ensure 99.999% network uptime and simplified maintenance.
Standardized Front-to-Back Airflow in Campus Branch Networks using JPSU-350-AC-AFO-350W AC PWR SUP
A multi-campus university standardizes on EX4300 switches with JPSU-350-AC-AFO-350W AC PWR SUP to enforce front-to-back airflow in hot-aisle/cold-aisle branch closets. Outcome: 15% reduction in power usage effectiveness (PUE), uniform cooling across 10 sites and streamlined PSU replacement protocols.
High-Density Rack Thermal Management with JPSU-350-AC-AFO-350W AC PWR SUP in EX4300
A colocation provider outfits high-density racks of EX4300 switches with JPSU-350-AC-AFO-350W AC PWR SUP to optimize thermal performance and power efficiency at scale. Outcome: 20% higher rack density, 10% lower cooling costs and reliable front-to-back airflow under peak load.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| JPSU-350-AC-AFO |  JPSU-150-AC-AFO |  QFX3100-PWRAC-560A |  JPSU-650W-AC-AFI |  JPSU-850W-DC-AFI | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 400W | 150W | 550W | 650W | 850W |
| Use Case | Gaming / Workstation / General Use | General Use | Gaming / Workstation / Enterprise Server | Gaming | Enterprise Server / Workstation / Gaming |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Non-Modular | Non-Modular | Modular | Semi-Modular | Modular |
| 80 PLUS Certification | Bronze | 80 PLUS | Gold | Gold | Gold |
| Rail Configuration | Single Rail | Single Rail | Single Rail | Single Rail | Single Rail |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS |
| Remote Monitoring | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 80mm | 80mm | 120mm | 120mm | 120mm |
| Fan Bearing Type | Sleeve | Sleeve | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | No |
| Efficiency Rating | 87% | 85% | 90% | 92% | 92% |
| Protections | OCP / OVP / SCP / OTP | OCP / OVP / SCP | OCP / OVP / SCP / OTP | OCP / OVP / UVP / SCP / OTP / OPP | OCP, OVP, UVP, SCP, OTP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 1 | 1 | 1 | 1 | 1 |
| PCIe (6+2) Connectors | N/A | N/A | 2 | 2 | 2 |
| SATA Power Connectors | 2 | 2 | 8 | 6 | 6 |
| Molex Connectors | 1 | 2 | 4 | 2 | 2 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Flat | Flat | Sleeved | Mixed | Sleeved |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 100,000 hours | 100,000 hours | 150,000 hours | 150,000 hours | 150,000 hours |
| Operating Temperature | 50°C | 40°C | 50°C | 50°C | 50°C |
| Product Name | JPSU-350-AC-AFO Power Supply Unit | JPSU-150-AC-AFO | QFX3100-PWRAC-560A | JPSU-650W-AC-AFI | JPSU-850W-DC-AFI |
| Height | 3.5 inches | 4.5 inches | 5 inches | 5.5 inches | 5.9 inches |
| Width | 5.5 inches | 6.3 inches | 6 inches | 5.9 inches | 5.5 inches |
| Depth | 5.9 inches | 5.9 inches | 11 inches | 8.5 inches | 3.4 inches |
| Weight | 3.5 lbs | 3.2 lbs | 8 lbs | 4.5 lbs | 7.5 lbs |
Reviews & Ratings
M
Martin Fowler
4
Stable power delivery since deployment.
E
Edward Finch
4
Easy to install and replace.
V
Victor Lane
5
Reliable PSU for EX series.
S
Simon Grant
5
Meets expectations.
Questions & Answers
What is the JPSU-350-AC-AFO power supply?
The JPSU-350-AC-AFO is a 350 W AC power supply module with front-to-back airflow, engineered for Juniper EX4300 series switches.
Which devices are compatible with the JPSU-350-AC-AFO?
This power supply is fully compatible with all Juniper EX4300 models, including EX4300-24T, EX4300-48P, and Virtual Chassis configurations.
What is the airflow direction of the JPSU-350-AC-AFO?
The JPSU-350-AC-AFO provides front-to-back airflow to ensure optimal cooling within the EX4300 chassis.
What AC input voltage range does the JPSU-350-AC-AFO support?
It accepts 100–240 VAC at 50–60 Hz, enabling global deployment without manual voltage switching.
What is the output power rating of the JPSU-350-AC-AFO?
This module delivers a regulated 350 W DC output to power EX4300 switches under full load.
Is the JPSU-350-AC-AFO hot-swappable?
Yes. It is hot-swappable, allowing you to replace or install the module without shutting down the switch.
How do I install the JPSU-350-AC-AFO into an EX4300 chassis?
Slide the module into an empty rear power slot until it latches, then connect a compatible AC power cord.
Can I use the JPSU-350-AC-AFO in a redundant power configuration?
Yes. Two JPSU-350-AC-AFO modules can be deployed in redundant mode to ensure power failover and increased uptime.
What efficiency rating does the JPSU-350-AC-AFO have?
It is 80 PLUS Platinum certified, delivering up to 92% energy efficiency under typical operating loads.
Does the JPSU-350-AC-AFO include a power cable?
No. You must procure a compatible C13/C14 AC power cord separately to connect the module to your power source.
What do the LED indicators on the JPSU-350-AC-AFO signify?
A green LED indicates normal operation, amber warns of power issues, and red signals a module failure.
What warranty covers the JPSU-350-AC-AFO?
Juniper provides a limited lifetime warranty covering defects in materials and workmanship for this module.
How do I troubleshoot a failing JPSU-350-AC-AFO?
If the LED indicates failure, verify AC input, reseat the module, then follow the EX4300 hardware troubleshooting guide.
What is the MTBF for the JPSU-350-AC-AFO?
The module boasts a mean time between failures (MTBF) of 100,000 hours for continuous, reliable operation.
Where can I purchase a genuine JPSU-350-AC-AFO?
Purchase genuine modules from authorized Juniper resellers or directly via the Juniper Networks online store.