All Zalman Tech products are ultra-quiet in order to achieve enhanced computing environment. This product is an ultra-quiet ATX12V Ver2.2 power supply supporting the latest Dual-Core 64 bit Intel Pentium D & AMD Athlon64 X2 CPU-equipped systems.         CNPS (Computer Noise Prevention System) with Auto Control Cooling Fan Noise has been greatly reduced with the implementation of the heat-sensor circuitry, which is in control of the cooling fan’s speed (rpm) in relation to the temperature, inside the power supply. The graph below shows the CNPS characteristics of our product. ※ CNPS (Computer Noise Prevention System) refers to a system that reduces a conventional computer’s noise (30dB or more) to an inaudible level (20dB or less). In order to create a true noise-free computer, Zalman’s other noise-free products should be used together with this product. [Noise Level (dB) Changes In relations to Power Supply's Internal Temperature] The graph above shows that the ZM460B-APS in “Noiseless” or “Silent” mode can operate when the power supply's internal temperature is kept below 45°C. This information is in compliance with the 2 Revision of ISO7779, an international standard for noise level measurement. Results may vary for different system configuration and/or the test environment.   Improved Power Factor & Reduced Harmonics through Active PFC By implementing Active PFC, the power factor (PF) was improved from 75% (Passive PFC) up to 96% (230VAC, Full load), while harmful harmonic frequencies were reduced below regulatory requirements.   High Efficiency Design The efficiency of this product exceeds 80% (230VAC, Full Load) with the use of high switching frequency and low power-loss circuitry.   ATX20+4 Pin Main Connector ATX20+4 Pin main connector broadens mainboard compatibility.   ATX12V CPU (4-Pin) & EPS12V CPU (8-Pin) Connectors Use two ATX12V 2ⅹ2(4-pin) connectors together to form an EPS12V CPU connector(8-pin).   Dual PCI Express VGA Power Connectors (6-Pin) Two PCI-Express VGA power connectors are provided to support high-end graphic cards (Nvidia SLI & ATI Cross-Fire). (It may not support certain graphic cards depending on their specifications.)   NMB-MAT 120mm Fan Fan’s noise level can be kept constant compared to other products even if used for a long duration by employing the 2-Ball Bearing 120mm fan of NMB-Matsushita known for their great endurance and excellent reliability.   Dual +12VDC Output Two +12VDC rails of combined output up to 34A(Only ZM460B-APS) provide more stable power to high-end systems.   EZ Grip Connectors for ODD & HDD EZ Grip Connectors for ODD & HDD for easy connecting and disconnecting of the plugs.   Use of gold-plated terminals Minimized power loss with reduced contact resistance by gold-plating the terminals of all connectors.   Sleeved Cables All power cables are sleeved for easy cable management and improved air circulation inside the computer case.   WEEE & RoHS Complies with WEEE & RoHS environmental directives of the European Union. - WEEE (Waste Electrical and Electronic Equipment) - RoHS (Restriction of Hazardous Substances)   International Safety and EMC Certifications

Output Power Cable Specifications   [Cable Types and Functions]         [Dual-Connector (ZM-DC1) Components]       Electrical & Physical Characteristics   AC Input Range Voltage 100VAC ~ 240VAC ±10% DC Output Frequency 47Hz~63Hz Output V. Output Load Rating Combined Power AC Input Current (Rated) 115VAC 7.5A Imin Imax Ipeak 230VAC 3.5A +3.3V 0.3A 30A   152W 460W PFC Type Active PFC +5V 0.5A 30A   Power Factor 96% Min. @ 230VAC, Full Load +12V1 1.0A 16A 20A 408W Inrush Current Limit (@ Cold start at 25°C) 115VAC 80A +12V2 1.0A 18A 22A 230VAC 120A -12V 0.0A 0.8A     Efficiency 80% Min. @ 230VAC, Full Load +5VSB 0.0A 2.5A 3.5A DC Output Voltage Regulations Output V. Regulation Range At Full Load Protection Features +3.3V ±5% +3.14V~+3.47V Over Voltage Protection(OVP) +5V ±5% +4.75V~+5.25V Over Current Protection(OCP) +12V1 ±5% +11.4V~+12.6V Short Circuit Protection(SCP) +12V2 ±5% +11.4V~+12.6V Over Temperature Protection(OTP) -12V ±10% -10.8V~-13.0V Under Voltage Protection(UVP) +5VSB ±5% +4.75V~+5.25V Ambient Temperature DC Output Ripple & Noise Output V. Specification At Full Load Operation 0°C ~ +50°C +3.3V 50mV Storage -20°C ~ +80°C +5V 50mV Ambient Humidily +12V1 120mV Operation 5%RH ~ 95%RH +12V2 120mV Storage 5%RH ~ 95%RH -12V 120mV Dimensions +5VSB 50mV 140(L) x 150(W) x 86(H) mm

Zalman affixes a Computer Noise Prevention System (CNPS) mark to all components used for noiseless computers.

Plugging the main power connector P1 into the motherboard while the product is connected to the AC power source may result in damage to the motherboard. Make sure that the connectors are connected to their designated locations, and that the connectors are not oriented in the wrong direction when connecting the DC output connectors. If the Power On light fails to light up when the main power button is pressed after completing the installation procedure, then some devices may be plugged in incorrectly or the motherboard may be faulty.