Jrifedptry DDR2 and DDR3 2 in 1 Illuminated Tester with Light for Desktop Motherboard Integrated Circuits

The error can be detected by the LED light, indicating open circuit, short circuit, data line or address line By booting and reading the RAM Memory Slot Tester, it can indicate the error in the motherboard circuit for further repair Install the 3.3 v (CR2032) battery on the tester, motherboard does not need power on, on the tester's button If the LEDs all light up and the brightness are all the same, the signal is there is no problem Light out or weak light signals gives problem. You must refer to sign indication in addition to that LED light