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Easily test your computer power supply and avoid damage to computer equipment No batteries required
Compatible with ATX, BTX, ITX power supplies
Voltage Source: 20/24pin (ATX-connector) Voltage Test: +3.3V, +5V, +VSB, and +12V
Size: 4.75" x 2.5" / 12.07cm x 6.35cm; Color: Black
Package Contents: 1x Digital Power Supply Tester