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Silver rectangular 1U server PSU with side fan grille and rear cable connectors

Athena Power

Athena Power P1U-5520K 520W 1U server power supply

SKU CH-KS9Z-JN8NN MPN P1U-5520K

520W single 1U server supply with 80Plus Platinum efficiency, ATX 24-pin, EPS 8-pin, two SATA and four Molex connectors, plus PMBus monitoring

  • Single/RedundantSingle
  • Maximum Power520W
  • Main ConnectorATX Connector 24 (20+4) Pin x 1 P4-12V 4Pin x 1 EPS 12V 8Pin
  • Output Current+3.3V@14A, +5V@14A, +12V@43A, [email protected] , +5VSB@2A
  • Input Voltage88 - 264 V
  • Input Frequency Range47 - 63 Hz
  • 520 W output powers dense 1 U servers
  • 88–264 V input accepts global mains voltages
  • 120 000-hour MTBF supports continuous operation
  • PMBus link enables remote power monitoring
  • 57" height fits standard 1 U chassis

Single 1U server supply

The Athena Power P1U-5520K is a new 520W single unit built for 1U rack servers and compact IPC chassis. It accepts 88 to 264 V at 47 to 63 Hz, making it suitable for global deployment without switching. The 120,000-hour MTBF at 25 °C and 16 ms hold-up time support continuous operation in always-on environments.

520W capacity with 43 A on the +12 V rail

The +12 V line delivers up to 43 A, while +3.3 V and +5 V are each rated at 14 A and the +5 V standby rail provides 2 A. This headroom covers multi-core CPUs, several storage drives and add-in cards in a single 1U node. Systems requiring redundant power or higher total wattage will need a different form factor or a dual-unit chassis.

1U depth with ATX, EPS and PMBus connectors

Measuring 1.57 by 3.94 by 7.50 inches and weighing 4.00 lbs, the supply fits standard 1U bays. Cabling includes a 24-pin ATX connector, one 4-pin P4, one 8-pin EPS, two SATA, four Molex, two floppy and a 5-pin PMBus header for monitoring. The fixed cable set limits routing flexibility in deeper chassis but simplifies installation in space-constrained racks.

Points forts

  • 520 W output powers dense 1 U servers
  • 88–264 V input accepts global mains voltages
  • 120 000-hour MTBF supports continuous operation
  • PMBus link enables remote power monitoring
  • 57" height fits standard 1 U chassis

Caractéristiques

BrandAthena Power
ModelP1U-5520K
Single/RedundantSingle
Maximum Power520W
Main ConnectorATX Connector 24 (20+4) Pin x 1
P4-12V 4Pin x 1
EPS 12V 8Pin x 1
SATA 15Pin x 2
Molex 4Pin x 4
Floppy 4Pin x 2
PMBus 5Pin x 1
Output Current+3.3V@14A, +5V@14A, +12V@43A, [email protected] , +5VSB@2A
Input Voltage88 - 264 V
Input Frequency Range47 - 63 Hz
MTBF120,000 Hours at Ambient Temperature +25 degree C
Hold-up Time16 ms Minimum at Nominal Input Voltage
FeaturesRise time: Less than 25 ms
Dimensions1.57" x 3.94" x 7.50"
Weight4.00 lbs.
TemperatureOperating: 0 degree C ~ +50 degree C;
Non-Operating: -20 degree C ~ +80 degree C
Poids d’expédition1.68 kg
Dimensions du colis254 × 163 × 81 mm

Questions sur cet article

Will the 24‑pin ATX and EPS 8‑pin connectors power an older motherboard that still uses a 20‑pin main plug and a 4‑pin CPU plug?

Yes, the 24‑pin connector splits into 20+4 pins and the EPS 8‑pin can be separated to 4+4, so both legacy sockets are supported.

How can I confirm the unit is delivering stable rails after installation?

The PMBus 5‑pin header lets monitoring software read +3.3V, +5V and +12V voltages in real time, and the hold‑up time is rated at 16 ms minimum.

Does the package include every cable needed for a typical 1U server build?

The supply ships with fixed cables for ATX 24‑pin, EPS 8‑pin, P4 4‑pin, two SATA 15‑pin, four Molex 4‑pin and two floppy 4‑pin connectors; no extra cables are required for those devices.

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