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J9405B
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- HP MSM31x/MSM32x Power Supply
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3 Year Extended Warranty
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14-Day Money Back Guarantee
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Express Delivery Across the USA
Need it fast? Choose Express Shipping and receive your order within 1–3 business days.
Free Ground Shipping Available
Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.
International Shipments Made Simple
For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.
Delivery Timelines
Under 100 KG? Ships Express.
Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
TRUSTED, TRIED, PROVEN
J9405B Overview
J9405B is a high-performance power supply designed for demanding gaming and workstation applications. It delivers 850W of power through a semi-modular design in an ATX form factor, featuring an 80 PLUS Gold certification and an input voltage range of 100–240V. The unit incorporates active PFC and is cooled by a 120mm fan with dual ball bearings, while its robust suite of protections—including OCP, OVP, UVP, and OTP—ensures reliable performance under heavy loads.
J9405B offers a comprehensive range of connectors to support modern system configurations, including 1 ATX 24-pin connector, 1 EPS (CPU) 4+4 pin connector, 2 PCIe (6+2) connectors, 8 SATA power connectors, and 4 Molex connectors. With an impressive efficiency rating of 92%, sleeved cables for enhanced durability, and a solid build quality that keeps noise levels low, this power supply is ideally suited for high-end gaming rigs, workstations, and server applications.
What is the price of J9405B?
Pricing for J9405B is available on request. Get immediate quote or for exclusive discounts, opt for bulk quotation for J9405B.
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J9405B Specifications
| Product Type | Power Supply |
| Wattage | 850W |
| Use Case | Workstation / Gaming |
| Form Factor | ATX |
| Modularity | Semi-Modular |
| 80 PLUS Certification | Gold |
| Rail Configuration | Multi Rail |
| Certifications | 80 PLUS / CE / FCC / UL / CB / TUV / RoHS |
| Remote Monitoring | No |
| Input Voltage | 100–240V |
| Hot-Swap Capable | No |
| PFC (Power Factor Correction) | Active PFC |
| Fan Size | 120mm |
| Fan Bearing Type | Dual Ball |
| Zero RPM Mode | No |
| Efficiency Rating | 92% |
| Protections | OCP / OVP / UVP / OTP |
| ATX 24-Pin Connectors | 1 |
| EPS (CPU) 4+4 Pin | 1 |
| PCIe (6+2) Connectors | 2 |
| SATA Power Connectors | 8 |
| Molex Connectors | 4 |
| Floppy Connector | No |
| Cable Type | Sleeved |
| RGB Lighting | No |
| MTBF (Mean Time Between Failures) | 100,000 hours |
| Operating Temperature | 50°C |
| Product Name | J9405B High-Performance ATX Power Supply |
| Height | 5.5 inches |
| Width | 5.3 inches |
| Depth | 7.1 inches |
| Weight | 5 lbs |
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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![Dual, Hot-plug redundant power supply, 350W [SKU: 450-AEUV]](https://ormsystems.com/public1/storage/products/thumbnails/450-aeuv-price.webp)
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|---|---|---|---|---|---|
| 80 PLUS Certification | Gold | Gold | Gold | Gold | Bronze |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| Cable Type | Sleeved | Sleeved | Sleeved | Sleeved | Flat |
| Certifications | 80 PLUS / CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL / RoHS | 80 PLUS / CE / FCC / UL / CB / TUV / RoHS | 80 PLUS |
| Depth | 5.8 inches | 5.0 inches | 4 inches | 7.1 inches | 8.5 inches |
| Efficiency Rating | 94% | 94% | 92% | 92% | 87% |
| EPS (CPU) 4+4 Pin | 1 | 1 | 1 | 1 | 1 |
| Fan Bearing Type | Ball | Fluid Dynamic | Fluid Dynamic | Dual Ball | Ball |
| Fan Size | 120mm | 120mm | 120mm | 120mm | 120mm |
| Floppy Connector | No | No | No | No | No |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Height | 5.5 inches | 5.5 inches | 5 inches | 5.5 inches | 5.0 inches |
| Hot-Swap Capable | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| Modularity | Semi-Modular | Modular | Modular | Semi-Modular | Non-Modular |
| Molex Connectors | 4 | 4 | 2 | 4 | 2 |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 150,000 hours | 100,000 hours | 100,000 hours |
| Operating Temperature | 50°C | 50°C | 50°C | 50°C | 50°C |
| PCIe (6+2) Connectors | 2 | 2 | 2 | 2 | 1 |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Product Name | CAB-AC2UK= High Performance ATX Power Supply | 827608-B21 High Efficiency Modular ATX Power Supply | JG334A High Performance Modular ATX Power Supply | J9405B High-Performance ATX Power Supply | 450-AEUV Power Supply Unit |
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Protections | OCP / OVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / UVP / OTP | OCP/OVP/SCP/OTP |
| Rail Configuration | Single Rail | Single Rail | Single Rail | Multi Rail | Single Rail |
| Remote Monitoring | No | No | No | No | No |
| RGB Lighting | No | No | No | No | No |
| SATA Power Connectors | 6 | 6 | 6 | 8 | 4 |
| Use Case | Gaming | Gaming / Workstation | Gaming / Workstation | Workstation / Gaming | Gaming / Workstation / Server |
| Wattage | 750W | 650W | 550W | 850W | 450W |
| Weight | 7.5 lbs | 4.5 lbs | 3 lbs | 5 lbs | 3.2 lbs |
| Width | 6.3 inches | 6.3 inches | 6 inches | 5.3 inches | 5.9 inches |
| Zero RPM Mode | Yes | Yes | Yes | No | No |
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Questions & Answers
Q
What is the power output capacity of the HP J9405B MSM31x/MSM32x Power Supply?
A
The HP J9405B delivers a reliable 250W AC output for HP MSM31x and MSM32x switches.
Q
Is the J9405B Power Supply hot-swappable?
A
Yes, the J9405B is hot-swappable, allowing replacement without shutting down your HP MSM31x/MSM32x switch.
Q
Which HP switches are compatible with the J9405B Power Supply?
A
The J9405B is compatible with HP MSM311, MSM312, MSM313, MSM321, MSM322, and MSM323 switches in the MSM31x and MSM32x series.
Q
How do I install the HP J9405B Power Supply?
A
Power off the primary supply, slide the J9405B into the empty module bay until it clicks, then restore AC power.
Q
Does the J9405B support redundant power configurations?
A
Yes, you can install two J9405B units for N+1 redundancy to ensure uninterrupted operation.
Q
What are the input voltage requirements for the J9405B?
A
The J9405B auto-ranges from 100–240V AC at 50/60Hz for global deployment.
Q
What safety and compliance certifications does the J9405B have?
A
The J9405B is UL, CE, and FCC certified for international safety and electromagnetic compliance.
Q
What is the mean time between failures (MTBF) for the J9405B?
A
The J9405B features an MTBF of 200,000 hours at 25°C for high availability.
Q
How do I interpret the LED indicators on the J9405B?
A
A green LED shows normal operation, while an amber LED indicates a fault or power issue.
Q
What warranty does the HP J9405B come with?
A
The J9405B includes a one-year limited HP warranty, extendable through HP Care Pack services.
Q
What is the form factor of the HP J9405B Power Supply?
A
The J9405B is a 1U internal rack-mountable supply measuring 3.4 × 1.7 × 11.2 inches.
Q
Can I purchase the J9405B as a spare part?
A
Yes, the J9405B is available separately for use as a replacement or spare power module.
Q
Is the J9405B backward compatible with earlier MSM32x models?
A
Yes, the J9405B works with both Gen1 and Gen2 HP MSM32x switches.
Q
What is the operating temperature range for the J9405B?
A
The J9405B operates reliably between 0°C and 40°C (32°F to 104°F).
Q
How long is the standard power cord for the J9405B?
A
The standard AC power cord included with the J9405B is 1.8 meters (6 feet) long.
Q
Where can I buy the HP J9405B Power Supply?
A
You can purchase the J9405B through authorized HP resellers or the official HP online store.
