Do you just want to know what each component is or do you want to some serious electrical work to it? If it’s the former, just look at the images in this eBay listing below:
Find many great new & used options and get the best deals for For ASUS X751L R752L X751LDV X751LD Mainboard W/ I5-4200U Motherboard GT820M 4GB at the best online prices at eBay! Free delivery for many products!
rover.ebay.com
Then just ask here about which part you want to know about.
If it’s the case of the latter, then you’re probably best talking to Asus directly.