Suit for the laptop and desktop which of POST code output to LPT, can access to USB or access to computer power　
4-digit display. "Star Code" is "0000"or"FFFF".Can test itself faults, fully compatible 286 to PIV motherboards, the code is nore exact, and reliable. no crash. Can check the code, the code won't pass when it appears, press switch once, then display a code and pause.
