Dell Xps help

[dellxpshelp]

We have a L502x laptop. The motherboard has gone bad and we are looking to purchase a motherboard off ebay, however there seem to be several l502x motherboard and I am wondering if they all work. Here are the links: Dell XPS 15 L502X System Motherboard nVIDIA GeForce GT 540M 1GB 0714WC 714WC | eBay and Dell XPS 15 L502X System Motherboard nVIDIA GeForce GT 525M 1GB 0C47NF C47NF | eBay thank you in advance

 

[IAntDemo]

None of them have the harddrive slots, next to the WLAN is where the harddrive bay clips in and I noticed it doesn't have one.. it may come with one ask before you purchase.

The 540 is the one you want since it's better (first link)