CPU
Dell vostro 3668 motherboard i5 7th gen
How to identify the burned transistor...
4496 is shown... Other half is missing
....
Images are attached...

 

Do you have another identical board you can reference? I would say the schematics are your best bet, but likely these are not public information. Perhaps you could find another user with the same board that would be willing to snap a pic for you.

 

http://aosmd.com/pdfs/datasheet/AO4496.pdf

I figure the rest is just production dates and what not.

https://www.google.com/search?q=AO4...hUKEwjSh-Kp-P7uAhWWdzABHflrDV0Q_AUoAHoECAEQBw