1Introduction
Congratulations on your choice of this Dynex DX-400WPS or Dynex
DX-520WPS power supply. Please read this manual carefully and follow
the instructions before installing the power supply.
This is an advanced power supply with excellent acoustic and thermal
performance and intelligent thermal fan control technology that makes
it virtually silent. The power supply provides perfect protection for your
system and comes equipped with two +12V rails that can handle a
maximum load of 18A for additional system reliability.
Safety information

Safety regulations

The power supply meets safety guidelines and regulations for UL, cUL,
and FCC.

Important safety instructions

• Do not place your system near a radiator or other heat source.
• Do not place your system close to a source of strong magnetic
fields.
• Do not place your system in a moist or dusty environment, or in
an area subject to strong vibration.
• Do not place your system in direct sunlight.
• Your computer must operate at a stable AC input voltage.
• Your computer should not be situated directly next to a heater or
another heat source.
• Do not open the cover on the power supply case. Dangerous
voltages are present inside the cover. Your warranty is void if the
cover is removed.
• Never operate the device with wet or moist hands.
• Never place items in the openings or fan of the power supply.
• Make sure that the power cord is plugged into a powered
electrical outlet.
• Make sure that the power cord is plugged into the power supply.
• Make sure that you connect your power supply properly. Check
your motherboard and graphic card manuals for compatibility
before connecting the power supply to any of your devices.
Caution (for DX-400WPS only): Check the red power supply voltage
switch setting before installation. The setting should be the same as
your local power voltage (115V for North America and 230 V for
Europe and other countries). Change the voltage setting if necessary.
Failure to take this precaution could result in damage to your
equipment and could void your warranty.
Note: If the power supply does not work correctly, contact our service
center immediately at (800) 305-2204.
Power supply components and features
Power supply features include:
• Complies with the newest Intel standard ATX 12V version 2.31
and is downward compatible with V2.2 and V2.0
• Supports Intel and AMD dual-core and multi-core processors
• High-performance components designed for better reliability
• Dual +12 V outputs for higher power capacity
• One 4+4 pin +12 V CPU connector for high-end CPUs
• One 6+2 pin PCI Express connector for high-end video cards
• 140 mm low-noise cooling fan
• All DC cables are mesh-sleeved. The length is 15.75 in. (40 cm)
• High reliability, including built-in protection circuit OVP, OLP, SCP,
and line input fuse protection
Power supply components include:
DX-400WPS power supply
DX-520WPS power supply
Package contents
• 400-Watt or 520-Watt ATX Power Supply
• AC power cord
•User Guide
AC power
jack
Cooling fan
Ventilation
grating
Voltage switch
ON/OFF switch
AC power
jack
Cooling fan
Ventilation
grating
13-0313 DX-400WPS-DX-520WPS_MAN_ENG_V5.book Page 1 Thursday, March 27, 2014 7:47 AM