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80 PLUS is an initiative to promote energy-efficient power supplies in desktop computers and servers. With advancement in existing technologies, 80 PLUS has set higher certification standards to include bronze, silver and gold.
Active PFC
Active Power Factor Correction PSU will automatically detect whether the input voltage range is between 90V~264V and adjust compatible output voltage. The PF value is much higher than Passive Power Factor Correction.
Blue Angel
The Blue Angel is awarded to companies as kind of a reward for their commitment to environmental protection. They use it to professionally promote their eco-friendly products in the market. The Blue Angel is an ecological beacon showing the consumer the way to the ecologically superior product and promotes environmentally conscious consumption.
BSMI (Bureau of Standards, Metrology and Inspection)
BSMI (Bureau of Standards, Metrology and Inspection) - Taiwanese safety certification
Capacitors are mainly used as an energy storage component (can also be used as noise filter or voltage stabilizer ).
China Compulsory Certification - Chinese product certification
A self-declaration of product conformity with the directives issued by European Union for the products exported to Europe.
Australian EMI regulation
Power efficiency is the ratio of output power to input power expressed as a percentage. With better power transfer, the efficiency level will be increased.
ElectroMagnetic Compatibility Abilities of both interference and resistance of an electrical/electronic device which interferes with and to be interfered by the others around.
ElectroMagnetic Interference The interference through radiation or conduction from an electrical/electronic device to others around.
Energy Star
The Energy Star program was created in 1992 by the United States Environmental Protection Agency in an attempt to reduce energy consumption and greenhouse gas emission by power plants. Energy efficient choices can save families about a third on their energy bill with similar savings of greenhouse gas emissions, without sacrificing features, style or comfort.
EMI (ElectroMagnetic Interference) regulation by Federal Communications Commission
GOST - Russian production certification
Hold Up Time
The time frame that output voltage of power supply is still within the regulation thresholds after input voltage is cut off or lower than regularity.
Max. Output Capacity
Peak Output Wattage
Modularized cable
Users can adjust the connectors according to their own needs.
Mean time between failures (MTBF) is the mean (average) time between failures of a system, and is often attributed to the "useful life" of the device i.e. not including infant mortality or end of life.
Multiple +12V rail
Multiple +12V rail comparatively provides less current than Single +12V rail, but the advantage is to maintain a better stability. But if users adopt a high end graphic card, single Multiple +12V rail PSU may not provide enough support.
OCP (Over Current Protection)
The power supply will latch off to avoid any damage when output current exceeds the regularity.

OPP (Over Power Protection)
The power supply will latch off to avoid any damage when output power exceeds the regularity.
OTP (Over Temperature Protection)
The power supply will latch off to avoid any damage when the temperature of internal components exceeds the normal level.
Output Capacity
Continous Output Wattage
OVP (Over Voltage Protection)
Over Voltage Protection The power supply will latch off to avoid any damage when output voltage exceeds the regularity.
Passive PFC (Passive Power Factor Correction)
PSU will not automatically detect whether the voltage is between 90V~264V. Users need to manually adjust compatible voltage. The PF value is much lower than Active Power Factor Correction.
PFC (Power Factor Correction)
Correct PF (Power Factor) value. PF=1 means perfect performance.
PGS (Power Good Signal)
A delay circuit used to initialize the computer and provide a logic signal upon low line voltage.
PWM (pulse-width modulation) uses duty-cycle to precisely control the output voltage to meet the demand of computer system, in order to help keep a stable system. Too much or not enough voltage will damage the system.
RoHS (Restriction of Hazardous Substance)
Electrical and mechanical products are restricted to apply the following six chemical substances: Pb, Cd, Hg, Cr6+, PBB and PBDE.
SCP (Short Circuit Protection)
The power supply will stop to provide power to avoid any damage when output is short circuit or grounding. Power supply will automatically recover when the fault is removed.
Single +12V rail
Single +12V rail can provide more current. But higher the output voltage is, the more difficult it is to maintain stability.
Soft-start circuit
The soft-star circuit limits the inrush current, relieving components of unnecessary strain and damaged, effectively prolonging the life of the PSU.
Standard cable
The connectors are fixed on the PSU.
TÜV - German production and safety certification

UL (Underwriters Laboratories)

UVP (Under Voltage Protection)
The power supply will latch off to avoid any damage when the alternating current power is lower than the normal level or output voltage is lower than the regular voltage.
VRM (Voltage Regulation Module)
VRM (Voltage Regulation Module) is a device to keep the output voltage in a standard and safe level.