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AF479A
HPE R18000 DirectFlow - 2U Rackmount Uninterruptible Power S...
Federal agencies and Fortune 500 operations source through ORM Systems.
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Enterprise Clients
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
AF479A is an 850W semi-modular ATX power supply featuring an 80 PLUS Gold certification to ensure high conversion efficiency. It operates on an input voltage range of 100–240V with Active PFC, and its 120mm fan with Fluid Dynamic bearing keeps thermal performance stable while maintaining low noise levels.
Designed for demanding common use cases including gaming, workstation, and enterprise server environments, AF479A incorporates comprehensive protections such as OCP, OVP, UVP, SCP, and OTP. It offers robust connectivity with one ATX 24-pin connector, two EPS (CPU) 4+4 connectors, four PCIe (6+2) connectors, and ten SATA power connectors alongside four Molex connectors, all delivered with high build quality and sleeved cables.
AF479A price is is available on request. Get immediate quote.
Request bulk order quote for AF479A for additional pricing. Browse the full Hpe Power Supplies series or explore all Hpe products.
In a mid-sized enterprise data center hosting virtualization clusters and SAN storage, the AF479A-HPE R18000 DirectFlow 2U Rackmount UPS maintains continuous, low-distortion power through auto-bypass switching during utility failures or voltage sags. Outcome: Achieves industry-leading 99.99% service availability, eliminates VM crashes and storage corruption, and supports seamless server failover without manual intervention.
At remote cellular base stations and network aggregation nodes, AF479A-HPE R18000 DirectFlow delivers 18 kW of conditioned power in a 2U footprint, safeguarding radios, switches and routers against brownouts and grid outages. Outcome: Ensures uninterrupted voice/data throughput, reduces field-service dispatches by 70%, and upholds SLA commitments for latency-sensitive mobile backhaul.
In automated manufacturing plants running PLCs, HMIs and SCADA controllers, the AF479A-HPE R18000 DirectFlow UPS preserves stable voltage and frequency during power events. Outcome: Prevents production-line stoppages, maintains real-time process control, and cuts unplanned downtime costs by up to 40%, delivering consistent OT data integrity and operational throughput.
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| AF479A |  784582-B21 |  AF463A |  Q0H80A |  J6X43A | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 850W | 750W | 650W | 650W | 750W |
| Use Case | Gaming / Workstation / Enterprise Server | Gaming / Workstation | Enterprise Server / Workstation / Gaming | Gaming / Workstation | Gaming / Workstation |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Semi-Modular | Modular | Modular | Modular | Modular |
| 80 PLUS Certification | Gold | Gold | Gold | Gold | Gold |
| Rail Configuration | Single Rail | Single Rail | Single Rail | Multi Rail | Multi Rail |
| Certifications | 80 PLUS / CE / FCC / UL / CB / TUV / RoHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS | 80 PLUS / CE / FCC / UL / ROHS |
| Input Voltage | 100–240V | 110–240V | 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 | 120mm | 135mm | 120mm | 120mm | 120mm |
| Fan Bearing Type | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 94% | 94% | 94% | 92% | 94% |
| Protections | OCP / OVP / UVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP, OVP, UVP, SCP, OTP | OCP / OVP / SCP | OCP / OVP / UVP / SCP / OTP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 2 | 1 | 1 | 2 | 2 |
| PCIe (6+2) Connectors | 4 | 2 | 2 | 3 | 4 |
| SATA Power Connectors | 10 | 6 | 6 | 6 | 6 |
| Molex Connectors | 4 | 4 | 4 | 2 | 4 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Sleeved | Sleeved | Sleeved | Sleeved | Sleeved |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 150,000 hours | 150,000 hours | 150,000 hours |
| Operating Temperature | 50°C | 55°C | 50°C | 50°C | 50°C |
| Product Name | AF479A - 850W Semi-Modular ATX Power Supply Gold | 784582-B21 High Performance Modular ATX Power Supply | AF463A High Efficiency Modular ATX Power Supply | Q0H80A 650W Gold Modular ATX Power Supply | J6X43A High Performance Modular ATX Power Supply |
| Height | 5.5 inches | 3.38 inches | 5.5 inches | 5.5 inches | 5.1 inches |
| Width | 7.0 inches | 5.91 inches | 5.9 inches | 6.3 inches | 6.3 inches |
| Depth | 6.0 inches | 5.51 inches | 6.1 inches | 5.8 inches | 5.9 inches |
| Weight | 4.5 lbs | 6.6 lbs | 4.2 lbs | 8.5 lbs | 4.5 lbs |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
UPS provides clean, stable power for critical workloads.
DirectFlow cooling keeps temperatures consistent.
Enterprise grade reliability and runtime.
Easy rack installation and management.
Excellent protection for data center equipment.
The HPE R18000 DirectFlow UPS delivers up to 18 000 VA (16 200 W) of backup power in a 2U rackmount form factor, ensuring continuous operation for high-density server and networking environments.
With its internal battery pack, the UPS provides up to 10 minutes of runtime at full 18 000 VA load and up to 20 minutes at 9 000 VA, allowing safe shutdown or migration during outages.
Yes. The UPS features hot-swappable battery modules with front-access trays, enabling battery replacement without powering down connected equipment.
Yes. The system supports optional external battery cabinets to extend runtime without increasing the 2U rack footprint.
It accepts a 3-phase 380–480 V input via IEC 309 or hard-wire terminal block and delivers power through eight IEC C13 and two IEC C19 outlets for versatile device support.
Manage locally via the built-in LCD control panel or remotely through SNMP/Web interfaces with the HPE Network Management Card, offering real-time metrics, alerts, and firmware updates.
The unit measures 88 mm (H) × 440 mm (W) × 737 mm (D) and weighs approximately 52 kg (excluding external battery packs), fitting standard 19-inch server racks.
It is certified to UL 1778, CE, IEC 62040-1, RoHS and meets FCC Class A emission standards, ensuring compliance in global data-center environments.
Rated for 0 °C to 40 °C (32 °F to 104 °F) with 0–95% relative humidity (non-condensing), suitable for typical data-center conditions.
Installation requires 2U of rack space using the included rail kit and brackets. Front and rear cable management arms simplify wiring and maintenance.
Perform periodic battery health tests, firmware updates via the management interface and replace battery modules every three years or as indicated by predictive alerts.
Yes. Its 2U, 19-inch rack form factor is fully compatible with all HPE ProLiant, Apollo and Synergy rack enclosures.
The unit includes a three-year limited warranty covering parts and labor. Optional HPE Proactive Care and 24×7 support contracts are available for faster response and preventive maintenance.
Yes. It uses online double-conversion technology with automatic voltage regulation (±1% output stability) and integrated surge and spike protection to safeguard sensitive electronics.
In online mode, the UPS achieves up to 94% efficiency at 50% load, reducing energy costs and minimizing heat output in the rack.
Absolutely. The integrated network management card supports SNMP traps, email alerts and SMS notifications for proactive power-event monitoring.
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