Help identifying components on logic board

Hello!

I recently found a MBP 15, mid 2010 (2.66 GHz Core i7) in the recycling room of my building and I'm trying to get it to work again. The only problem I could identify is that it doesn't recognise neither the optical drive nor the internal hard drive. (But it works with hard drive in USB) Looking closely at the logic board, I found 3 capacitors (1, 2, 3 in the pictures) and 1 resistor (4 on the pictures) that seem to be damaged or missing. Could anyone with the schematics help me identify those components?

Many many thanks in advance :)

Raphaël