PSU Testers

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itemId=c2227|~|priceRange=1|~|orderable=T|~|orderCount=5|~|call-to-order=|~|call-for-price=|~|hasOptions=T|~|isOrganic=F|~|isNew=F|~|bestseller=|~|name=Rexus 8-in-1 Deluxe 20+4pin ATX Power Supply Tester|~|brand=Rexus|~|cpuBrand=|~|ramIncluded=|~|type=|~|rating=5|~|ratingCount=4|~|price=11.98|~|priceReg=19.89|~|priceSale=11.98|~|image=https://s.yimg.com/aah/outletpc/rexus-8-in-1-deluxe-20-4pin-atx-power-supply-tester-56.jpg
4 Reviews
  • Tests 20-pin and 24-pin power supplies
  • Tests SATA power
  • Tests PCI-Express power connectors
  • Tests standard 4-pin power supply connectors
$19.89
$11.98
itemId=jl8449-p3-kill-a-watt-energy-usage-monitor|~|priceRange=1|~|orderable=T|~|orderCount=4|~|call-to-order=|~|call-for-price=|~|hasOptions=T|~|isOrganic=F|~|isNew=F|~|bestseller=|~|name=P3 Kill A Watt Appliance Killowatt Load Meter and Monitor|~|brand=P3 International|~|cpuBrand=|~|ramIncluded=|~|type=|~|rating=4.5|~|ratingCount=23|~|price=20.92|~|priceReg=23.8|~|priceSale=20.92|~|image=https://s.yimg.com/aah/outletpc/p3-kill-a-watt-appliance-killowatt-load-meter-and-monitor-85.jpg
23 Reviews
  • Large Lcd Counts Consumption By The Kilowatt Hour
  • Connects To Household Appliance & Assesses Its Efficiency
  • Calculates Electrical Expenses By The Day, Week, Month Or Year
  • Checks The Quality Of Power By Monitoring Voltage, Line Frequency & Power Factor
  • Dim: 5.13"h X 2.38"w X 1.63"d
  • Electricity usage monitor connects to appliances and assesses efficiency
  • Large LCD display counts consumption by the kilowatt-hour
$23.80
$20.92
itemId=c1004-coolmax-ps-124-deluxe-20-4-pin-psu-tester|~|priceRange=1|~|orderable=T|~|orderCount=2|~|call-to-order=|~|call-for-price=|~|hasOptions=T|~|isOrganic=F|~|isNew=F|~|bestseller=|~|name=CoolMax PS-124 Deluxe 20+4pin ATX Power Supply Tester w/ SATA Testing Capabilities (20pin / 24pin)|~|brand=Coolmax|~|cpuBrand=|~|ramIncluded=|~|type=|~|rating=0|~|ratingCount=0|~|price=14.89|~|priceReg=25.56|~|priceSale=14.89|~|image=https://s.yimg.com/aah/outletpc/coolmax-ps-124-deluxe-20-4pin-atx-power-supply-tester-w-sata-testing-capabilities-20pin-24pin-95.jpg
itemId=uj6251|~|priceRange=1|~|orderable=T|~|orderCount=4|~|call-to-order=|~|call-for-price=|~|hasOptions=T|~|isOrganic=F|~|isNew=F|~|bestseller=|~|name=Thermaltake AC0015 Dr. Power II ATX Power Supply Tester|~|brand=Thermaltake|~|cpuBrand=|~|ramIncluded=|~|type=|~|rating=4.5|~|ratingCount=24|~|price=31.89|~|priceReg=47.87|~|priceSale=31.89|~|image=https://s.yimg.com/aah/outletpc/thermaltake-ac0015-dr-power-ii-atx-power-supply-tester-76.jpg
24 Reviews
  • Supports all ATX power supply up to ATX12V 2.3.
  • Oversized LCD panel shows all voltages within 1/10th volt for quick and easy troubleshooting.
  • Voltage reading for all rails (+12V/5V/+3.3V/5VSB/-12V)
  • Built-in output connectors diagnostic system, low-voltage, high-voltage, no voltage, PG alarms.
  • Built-in alarm to notify user of unstable or abnormal power supply activity.
  • Easy to use troubleshooting system will quickly identify if power supply is the source of instability.
$47.87
$31.89






Power supply testers for computers. Test your computer power supply with one of our power supply testers. Power supply testers are small, simple devices that make it a cinch to test a computer's power supply.

FAQ & Section Info

Is my Power Supply really dead?

So you're not getting any video and your fans aren't spinning on? More than likely, there is an issue with your power supply. There are a couple of ways to test a power supply. One way is to use a voltage meter. The other is to use a power supply tester. it's a handy tool to have, especially if you're a computer technician. The other way to check is to plug in a known good power supply into your motherboard. If your motherboard then boots, that means your power supply is bad.