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		 User Guide   
					Insignia ATX 400 and ATX 520 Watt Power Supplies   
					NS-PCW4050/NS-PCW4050-C   
					NS-PCW5250/NS-PCW5250-C   
					Before using your new product, please read these instructions to prevent any damage.   
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				Introduction   
					Power supply components   
					and features   
					Congratulations on your choice of this Insignia   
					NS-PCW4050/NS-PCW4050-C or Insignia   
					Power supply features include:   
					NS-PCW5250/NS-PCW5250-C power supply. Please   
					read this manual carefully and follow the   
					instructions before installing the power supply.   
					• The 520 Watt complies with the newest Intel   
					standard ATX 12V V2.31 and is downward   
					compatible to V2.2 and V2.0. The 400 Watt   
					complies with Intel standard ATX 12V V2.2 and is   
					downward compatible with V2.0   
					• Supports Intel and AMD dual-core and multi-core   
					processors   
					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.   
					• 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   
					Safety information   
					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)   
					Safety regulations   
					The power supply meets safety guidelines and   
					regulations for UL, cUL, and FCC.   
					• High reliability, including built-in protection   
					circuit OVP, OLP, SCP, and line input fuse   
					protection   
					Power supply components include:   
					NS-PCW4050/NS-PCW4050-C power supply   
					Important safety instructions   
					Voltage switch   
					• 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.   
					AC power   
					jack   
					• Do not place your system in a moist or dusty   
					environment, or in an area subject to strong   
					vibration.   
					ON/OFF switch   
					Cooling fan   
					• 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.   
					Ventilation   
					grating   
					• 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.   
					NS-PCW5250/NS-PCW5250-C power supply   
					• 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.   
					AC power   
					jack   
					Cooling fan   
					Caution (for NS-PCW4050/NS-PCW4050-C only): Check the red   
					power supply voltage switch setting before installation. The   
					setting should be the same as your local power voltage (115 V   
					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.   
					Ventilation   
					grating   
					Note: If the power supply does not work correctly, contact our   
					service center immediately at (800) 305-2204.   
					1 
					
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				2 Connect all power supply cables. Make sure that   
					Package contents   
					each connection is secure.   
					Tip: If you are replacing an old power supply, reference your notes   
					from when you removed the old power supply to make sure you   
					are connecting all of your components correctly.   
					• 400-Watt or 520-Watt ATX Power Supply   
					• AC power cord   
					• User Guide   
					a 
					Connect the 20+4-pin main power   
					connector to your motherboard. If your   
					computer has an older motherboard with a   
					20-pin main power socket, connect only the   
					20-pin main power connector.   
					Installing the power supply   
					Preparing your power supply:   
					1 Make sure your motherboard, graphics card,   
					and other components are compatible with this   
					power supply. Refer to the documentation that   
					came with each component.   
					2 Check your local AC voltage (115 VAC for USA,   
					Canada, Japan, and others, and 230 VAC for   
					Europe, Southeast, Asia, and others). The   
					NS-PCW5250/NS-PCW5250-C is only   
					compatible with 115 VAC.   
					3 For NS-PCW4050/NS-PCW4050-C only: Make   
					sure that the red voltage switch (located on the   
					back of the power supply) is set to the correct   
					voltage setting.   
					Caution: Using the incorrect voltage can damage the power supply   
					b Connect the 8-pin (4+4) or 4-pin +12 V   
					and connected equipment and may void your warranty.   
					power connector to your motherboard.   
					Are you replacing a power supply?   
					• Yes, start at “Removing your old power supply”   
					below.   
					• No, go to “Installing your power supply” on pg 2.   
					Removing your old power supply:   
					1 Turn off your computer.   
					2 Unplug the power cord from your computer.   
					3 Open your computer case. (See the instructions   
					that came with your computer.)   
					4 Disconnect your old power supply from all   
					computer components.   
					Tip: Make sure to note each component and the connector type for   
					when you need to connect them to your new power supply.   
					c 
					Connect all of the following that apply to   
					your computer:   
					5 Remove the screws that secure your old power   
					supply to your computer case, then remove it   
					from the case.   
					i 
					The 4-pin peripheral connectors (4) to   
					any computer components with a 4-pin   
					connector, such as an IDE drive or a case   
					fan.   
					Installing your power supply:   
					1 Position your power supply in the computer   
					case, making sure that the AC power jack and   
					cooling fan are facing out, then secure your   
					power supply using the screws included with   
					your computer case.   
					2 
					
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				ii The floppy drive power connector to the   
					Connector types   
					floppy drive.   
					Connector   
					Illustration   
					Connect to   
					The motherboard   
					20+4-PIN Main Power   
					4-PIN+ 12V -   
					(400 Watt PS only)   
					The motherboard (for   
					CPU power)   
					-------------------------------OR-----------------------------------   
					iii The Serial ATA connectors (4) to any   
					computer components that have a Serial   
					ATA connector, such as a CD/DVD/Blu-ray   
					or hard drive.   
					8-PIN (4+4) + 12V -   
					(520 Watt PS only)   
					The motherboard (for   
					CPU power)   
					4-PIN peripheral -   
					Total 3 connectors   
					Internal IDE drives   
					Internal SATA drives   
					3.25” floppy drive   
					Serial ATA (SATA) -   
					Total 4 connectors   
					Floppy drive   
					iv The 8-pin PCI-E or 6-pin PCI-E connector   
					to a PCI-E graphic card.   
					PCI Express card (such as   
					a graphics card) that   
					requires power   
					6-PIN PCI-E   
					(400 Watt PS only)   
					------------------------------OR--------------------------------------   
					PCI Express card (such as   
					8-PIN PCI-E   
					a graphics card) that   
					(520 Watt PS only)   
					requires power   
					Troubleshooting   
					If your new power supply is not working correctly,   
					try the following:   
					Caution: Make sure that all connectors are securely connected.   
					Incorrect connections could prevent your computer from starting   
					and could damage some components.   
					• Make sure that the computer power cord is firmly   
					plugged into the power cord connector on your   
					computer.   
					• If you are using a surge protector, make sure that   
					it is plugged in and turned on.   
					• Make sure that the wall outlet is supplying power.   
					For example, plug a lamp into the outlet and turn   
					it on.   
					5 Close your computer case.   
					6 Connect the AC power cord to the power   
					supply, then to a surge protector or wall outlet.   
					7 Turn on your computer by pressing the power   
					button on the front of the case.   
					• If you have the NS-PCW4050/NS-PCW4050-C,   
					make sure that the red voltage switch (located on   
					the back of the power supply) is set to the correct   
					voltage setting. The setting for the United States   
					is 115 V. The setting for Europe and other   
					countries is 230 V.   
					Note: For more information, refer to your computer’s user guide.   
					3 
					
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				• Make sure that the system board power supply   
					cable is securely connected to the system board   
					connector (24 pin or 20 pin).   
					• The power supply may be overloaded. Unplug   
					any unnecessary components, such as extra   
					drives, then try again.   
					• Make sure that all power supply cables to   
					peripheral devices, such as hard drives, optical   
					drives, and fans, are securely connected. Any   
					loose power cable connections may cause the   
					power supply to operate incorrectly.   
					• If the power supply is very hot, check the case   
					fans and the power supply fan. Replace any faulty   
					case fans, then try again.   
					• If you have the NS-PCW4050/NS-PCW4050-C,   
					make sure the power switch (I/O) on the back of   
					the power supply is set to ON (I).   
					Specifications   
					400 Watt Power Supply   
					Legal notices   
					Output Voltage +12V1DC +12V2DC +5VDC +3.3VDC -12VDC +5Vsb   
					FCC warning   
					Max Load   
					Min Load   
					Max Watt   
					Peak Power   
					Regulation   
					Ripple   
					8.0 A   
					1.0 A   
					14.0 A 20.0 A 20.0 A 0.3 A 2.5 A   
					This equipment may generate or use radio frequency energy.   
					Changes or modifications to this equipment may cause harmful   
					interference unless the modifications are expressly approved in   
					the instruction manual.The user could lose the authority to   
					operate this equipment if an unauthorized change or   
					modification is made.   
					1.0 A   
					0.3 A   
					300 W   
					400 W   
					5%   
					0.5 A   
					0.0 A 0.0 A   
					5%   
					5%   
					5%   
					10%   
					5%   
					Caution: Any change or modification to the equipment not   
					expressly approved by the manufacturer or its authorized   
					parties could void your authority to operate the equipment.   
					120 mV 120 mV 50 mV 50 mV 120 mV 50 mV   
					120 mV 120 mV 50 mV 50 mV 120 mV 50 mV   
					100-500 mS   
					Noise   
					Power Good   
					Signal   
					UL statement   
					Any information or documentation provided to you involving UL   
					Mark services is provided on behalf of Underwriters Laboratories,   
					Power Fail   
					Signal   
					1 mS Min.   
					Inc.   
					Products that bear the UL Mark are identical to those that were   
					evaluated by UL and found to be technically compliant with the   
					UL’s applicable requirements.   
					For further information regarding the use of UL marks, please   
					
					Hold-up   
					Time   
					16 mS Min.   
					Dimensions 5.5 × 3.4 × 5.9 inches (W × H × L)   
					140 × 86 × 150 mm (W × H × L)   
					520 Watt Power Supply   
					Output Voltage +12V1DC +12V2DC +5VDC +3.3VDC -12VDC +5Vsb   
					Max Load   
					Min Load   
					Max Watt   
					Peak Power   
					Regulation   
					Ripple   
					18.0 A 16.0 A 18.0 A 20.0 A 0.3 A   
					2.0 A   
					1.0 A   
					1.0 A   
					0.5 A   
					420 W   
					520 W   
					5%   
					0.3 A   
					0.0 A 0.005 A   
					5%   
					5%   
					5%   
					10%   
					5%   
					120 mV 120 mV 50 mV 50 mV 120 mV 50 mV   
					Noise   
					200 mV 200 mV 100 mV 100 mV 200 mV 100   
					mV   
					Power Good   
					Signal   
					100-500 mS   
					Power Fail   
					Signal   
					1 mS Min.   
					Hold-up   
					Time   
					16 mS Min.   
					Dimensions 5.5 × 3.4 × 5.9 inches (W × H × L)   
					140 × 86 × 150 mm (W × H × L)   
					4 
					
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				• 
					• 
					Connection to an incorrect voltage or power supply   
					Attempted repair by any person not authorized by Insignia   
					to service the Product   
					One-year limited warranty -   
					Insignia   
					• 
					• 
					Products sold “as is” or “with all faults”   
					Consumables, including but not limited to batteries (i.e. AA,   
					AAA, C etc.)   
					Products where the factory applied serial number has been   
					altered or removed   
					Loss or Theft of this product or any part of the product   
					Display panels containing up to three (3) pixel failures (dots   
					that are dark or incorrectly illuminated) grouped in an area   
					smaller than one tenth (1/10) of the display size or up to   
					five (5) pixel failures throughout the display. (Pixel based   
					displays may contain a limited number of pixels that may   
					not function normally.)   
					Definitions:   
					• 
					The Distributor* of Insignia branded products warrants to you,   
					the original purchaser of this new Insignia-branded product   
					(“Product”), that the Product shall be free of defects in the   
					original manufacturer of the material or workmanship for a   
					period of one (1) year from the date of your purchase of the   
					Product (“Warranty Period”).   
					• 
					• 
					For this warranty to apply, your Product must be purchased in   
					the United States or Canada from a Best Buy branded or Future   
					
					
					this warranty statement.   
					• 
					Failures or Damage caused by any contact including but   
					not limited to liquids, gels or pastes.   
					REPAIR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS   
					YOUR EXCLUSIVE REMEDY FOR BREACH OF WARRANTY. INSIGNIA   
					SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR   
					How long does the coverage last?   
					CONSEQUENTIAL DAMAGES FOR THE BREACH OF ANY EXPRESS   
					OR IMPLIED WARRANTY ON THIS PRODUCT, INCLUDING, BUT   
					NOT LIMITED TO, LOST DATA, LOSS OF USE OF YOUR PRODUCT,   
					LOST BUSINESS OR LOST PROFITS. INSIGNIA PRODUCTS MAKES   
					NO OTHER EXPRESS WARRANTIES WITH RESPECT TO THE   
					PRODUCT, ALL EXPRESS AND IMPLIED WARRANTIES FOR THE   
					PRODUCT, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED   
					WARRANTIES OF AND CONDITIONS OF MERCHANTABILITY AND   
					FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN   
					The Warranty Period lasts for 1 year (365 days) from the date you   
					purchased the Product. Your purchase date is printed on the   
					receipt you received with the Product.   
					What does this warranty cover?   
					During the Warranty Period, if the original manufacture of the   
					material or workmanship of the Product is determined to be   
					defective by an authorized Insignia repair center or store   
					personnel, Insignia will (at its sole option): (1) repair the Product   
					with new or rebuilt parts; or (2) replace the Product at no charge   
					with new or rebuilt comparable products or parts. Products and   
					parts replaced under this warranty become the property of   
					Insignia and are not returned to you. If service of Products or   
					parts are required after the Warranty Period expires, you must   
					pay all labor and parts charges. This warranty lasts as long as you   
					own your Insignia Product during the Warranty Period. Warranty   
					coverage terminates if you sell or otherwise transfer the Product.   
					DURATION TO THE WARRANTY PERIOD SET FORTH ABOVE AND   
					NO WARRANTIES, WHETHER EXPRESS OR IMPLIED, WILL APPLY   
					AFTER THE WARRANTY PERIOD. SOME STATES, PROVINCES AND   
					JURISDICTIONS DO NOT ALLOW LIMITATIONS ON HOW LONG AN   
					IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT   
					APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL   
					RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS, WHICH VARY   
					FROM STATE TO STATE OR PROVINCE TO PROVINCE.   
					Contact Insignia:   
					For customer service please call 1-877-467-4289   
					
					INSIGNIA is a trademark of Best Buy and its affiliated companies.   
					Registered in some countries.   
					Distributed by Best Buy Purchasing, LLC   
					7601 Penn Ave South, Richfield, MN 55423 U.S.A.   
					©2014 Best Buy. All rights reserved.   
					Made in China   
					How to obtain warranty service?   
					If you purchased the Product at a Best Buy or Future Shop retail   
					store location, please take your original receipt and the Product   
					to any Best Buy or Future Shop store. Make sure that you place   
					the Product in its original packaging or packaging that provides   
					the same amount of protection as the original packaging. If you   
					purchased the Product from a Best Buy or Future Shop online   
					
					
					to the address listed on the web site. Make sure that you put the   
					Product in its original packaging or packaging that provides the   
					same amount of protection as the original packaging.   
					To obtain warranty service, in the United States call   
					1-888-BESTBUY, Canada call 1-866-BESTBUY for Future Shop call   
					1-800-663-2275. Call agents may diagnose and correct the issue   
					over the phone.   
					Where is the warranty valid?   
					This warranty is valid only in the United States and Canada at   
					Best Buy or Future Shop branded retail stores or websites to the   
					original purchaser of the product in the county where the   
					original purchase was made.   
					What does the warranty not cover?   
					This warranty does not cover:   
					• 
					• 
					• 
					• 
					• 
					Customer instruction/education   
					Installation   
					Set up adjustments   
					Cosmetic damage   
					Damage due to weather, lightning, and other acts of God,   
					such as power surges   
					• 
					• 
					• 
					• 
					• 
					Accidental damage   
					Misuse   
					Abuse   
					Negligence   
					Commercial purposes/use, including but not limited to use   
					in a place of business or in communal areas of a multiple   
					dwelling condominium or apartment complex, or   
					otherwise used in a place of other than a private home.   
					Modification of any part of the Product, including the   
					antenna   
					Display panel damaged by static (non-moving) images   
					applied for lengthy periods (burn-in).   
					Damage due to incorrect operation or maintenance   
					• 
					• 
					• 
					5 
					
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				www.insigniaproducts.com 1-877-467-4289 (U.S. and Canada) or 01-800-926-3000 (Mexico)   
					INSIGNIA is a trademark of Best Buy and its affiliated companies.   
					Registered in some countries.   
					Distributed by Best Buy Purchasing, LLC   
					7601 Penn Ave South, Richfield, MN 55423 U.S.A.   
					©2014 Best Buy. All rights reserved.   
					Made in China   
					V1 ENGLISH   
					14-0324   
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