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 |  Gwarancja
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
6 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.
