• High efficiency guarantee – certified power supply with 80 PLUS Bronze standard  
      • Real power – the power supply provides 400 W of continuous power 
        • Rich connector package – the product has a set of necessary plugs 
        • Quiet operation – optimum cooling when working at top speed is ensured by an efficient 12 cm fan 
        • Guaranteed reliability – the product has an extended warranty up to 36 months
      • A set of protections – protection of the device against damage is guaranteed by a number of protections
      • Convenient installation – long 45 - 75 cm cables provide freedom when installing in a housing
  • Product code AK-U4-400
  • Product type Computer power supply
  • Format ATX 2.31
  • Series Ultimate
  • Supply voltage 230 V
  • Power consumption < 5 A
  • Efficiency > 80 %
  • 80 PLUS compatibility Yes
  • 80 PLUS certificate Bronze
  • Current on the +3.3V rail 19 A
  • Current on the +5V rail 20 A
  • Maximum load on +3.3V and +5V line 120 W
  • Current on the +12V rail 27 A
  • Maximum load on 12V line 324 W
  • Maximum power 400 W
  • Mainboard Power Connector 24-pin
  • Power connector ATX12V P4 None
  • Power connector EPS12V 8 pin 1 pc ( 4 + 4-pin )
  • Power connector PCI-E 6 pin 1 pc
  • Power connector PCI-E 6+2 pin 1 pc
  • Power connector PCI-E 8 pin None
  • Molex connector 2 pcs
  • Mini-Molex connector 1 pc
  • SATA connector 6 pcs
  • Modular power supply No
  • PFC filter Active
  • Mechanical switch Yes
  • Ground wire Yes
  • OVP Yes
  • OCP Yes
  • OPP Yes
  • OTP Yes
  • SCP Yes
  • UVP Yes
  • Power supply connector IEC C14
  • Fan size 120 mm
  • Fan adjustments Automatic
  • Cable length 45 - 75 cm
  • The cable plug #1 Hybrid standard C/E/F ( CEE 7/7 )
  • The cable plug #2 IEC C13
  • Power cable included Yes
  • Material Galvanized steel
  • Product color Black
  • MTBF 100000 h
  • Temperature 5 - 50 °C
  • Package EcoBox
  • Product size (L x W x H) 140 x 150 x 90 mm
  • Package size (L x W x H) 222 x 155 x 95 mm
  • Net weight 1.19 kg
  • Gross weight 1.43 kg
  • CE compatibility Yes
  • FCC compatibility No
  • RoHS compatibility Yes
  • REACH compatibility Yes
  • Included accesories Cable AK-PC-01C
  • EAN code 5901720131423
  • Warranty 36 months

Reliable power supply with 80+ certification

The AK-U4-400 Ultimate series power supply is a reliable power source for computers with a powerful graphics card. It is ideal for the most popular computer sets.

Unrestricted operation

Max power
400 W

Fan dimensions
12 cm

Cable length
45-75 cm

36 months

AK-U4-400 power supply unit provides 400 W of continuous power. The product is characterized by effective cooling during top speed operation, which is solved by a built-in 120 mm fan. The efficiency of the fan is ensured by a speed monitoring controller depending on the components temperature. Moreover, a wide range of cables enables connection of up to 9 devices equipped with SATA MOLEX MINI-MOLEX sockets and a powerful graphics card with two PCI-Express power sockets. In addition, the extended warranty ensures the reliability of the power supply.

High efficiency guaranteed

High efficiency of the power supply is guaranteed by its compliance with the 80 PLUS® Bronze standard. The certificate ensures that at least 85% of electricity is transferred to the powered components. This has a direct impact on energy savings as well as lower heat output.

Reliable protection

The power supply is equipped with a number of protections and an active PFC filter. They provide protection, prevent components from damage and stabilize the power supply, so it runs without unwanted interference.

OVP protection — Protects the power supply against too high a voltage on the output line. It is activated when the voltage increases by 15% from the nominal value.

OCP protection — Protects computer components from too high output current. In case of an overload, one of the lines is automatically switched off.

OPP protection — Protects against power supply overload.

OTP protection — Protects against overheating of the PSU caused by overload and insufficient air circulation.

UVP protection — Protects against too low voltage on the output lines.

SCP protection — Protects against short circuit.

Variety of connectors

EPS12V connector
4+4 PIN

PCI Express connector
6+2 PIN

SATA conectors
4 pcs

Molex conectors
2 pcs

The power supply is supplied with a wide selection of plugs. In addition to the universal 24-pin MPC connector, the set includes two MOLEX connectors, six SATA connectors for Serial ATA HDDs and optical discs, and one mini-MOLEX connector. Additionally, the set includes PCI-E 6-pin connector and PCI-E 6+2-pin connector for graphics cards and one EPS12V 4+4-pin connector for powering motherboards. In addition, the power supply has a manual switch that allows user to safely cut off the power supply without having to unplug the power cord from the mains.