Now the number of power output groups is more and more, as long as one of them produces a problem, the computer system hardware may not work properly or even burn the affected accessories. To measure whether the power output voltage output is stable, usually players will use the multimeter, but for general users, it is always a problem point. This power tester only needs the ATX connector connected to the power supply to simply and intuitively know whether the output of each power supply circuit is normal. Included here is a good power signal that we cannot measure with the multimeter. (the power good signal is after the power starts to supply, must provide a power good signal to the motherboard, then the motherboard will start the self-test program. If the power of each output is normal, the good power signal is not normal, it may also cause the system cannot be turned on.) The good power of this power tester can test whether the output of This signal is normal. This new ATX power tester can test: 4PIN/6PIN/8PIN, HDD power interface/SATA power interface, FLOPPY, 20PIN/24PIN powerful power tester manual (1). Power supply to be tested 2. Plug the 24P (20P) socket of the power supply to be tested into the corresponding 24P (20P) socket of the power tester 3. Check if the seven lights on the right side (+3.3, -12v,PG,+5VSB,+12V, -5v,+5V) are on. Full lighting is good. (note: some power supplies -5 are not turned on, this is a normal phenomenon, because above P4 is no voltage -5v) 4. Insert the HDD socket of the power to be tested into the HDD socket of the power tester, check whether the two lights on the left (+12,+5V) are on, full light is good 5. Remove the HDD socket from the power tester, then insert the P4 socket (P6/P8) into the corresponding P4 socket (P6/P8), check if any of the lights on the left (+12V) are on, it's good to light up 6. Remove the P4 (P6/P8) jack from the power tester and insert the FLOPPY (floppy disk drive) jack into the corresponding FLOPPY jack. Check if the two lights on the left (+12V,+5V) are on. Full light is best 7. Take out the FLOPPY plug from the power tester and plug the SATA plug into the corresponding SATA jack. Check if the three lights on the left (+12V, +3.3v, +5V) are on. Full lighting is preferred