AFTER USING LOGIOPTIONS + :

THE MAUS M310 IS NOT TURNING RED WHENS ON (YES BUT REALY DARK AND THEN ITS TURN OFF)

THE KEYBOAD K540 THE POWER LED TURNS JUST THE FIRST SECONDS ON THEN IS OFF

FASIT: BOTH DEVICES ARE ON AND WORK WELL BUT COUSE THE LIGHTS ON BOTH IS DOWN U CANT TELL IF THE BATTERY IS DOWN AND U MIGHT BELIVE THAT THEY ARE OFF OR DEFECT UNTIL U SE THE REACTION ON THE PC, I SWITCHED TWO TIMES BETWEEN NORMAL ALCALINE BATTERIES AND RECHARCHABEL ONES COUSE I WAS THINKING THAT MAYBE THE ALCALINE HAVE TO HIGH VOLTAGE AND THE KEYBOARD AND MOUSE ARE BROKEN BUT NO, THANKS THE NEW FRINWARE THEY DONK GIVE A FEEDBACK ANYMORE, WELLDONE-(SARCASTIC)