markings

I'm trying to find the components of the PCB I have. But I have a problem with a 5 pin (I guess SOT23-5) component. Can someone help me abuot this? There are version1, version2 and version3 of the PCB and marking codes are AA43, AA44 and AACB respectively. There are reset button and error...

Hello, Can i put E-waste disposal footprint (see image below) on my pcb silkscreen layer !? Or does does my board have to pass some inspection or conforms to specific regulations before i can put it on my board!!? and what other markings that i can put without the board passing through some...