Hey,
hope I'm not too late and can help a little bit.
(from top to bottom, and left to right)
1st picture:
1. circle, is afaik UART.
2. 1st arrow is speaker
3. 2nd arrow is CI1 (Chassis Instrusion)
4. 3rd arrow is CMOS
2nd picture:
1. 1st circle to the left, sorry no idea ( have wondered about...