04-12-2019 11:21 AM
Welcome to the Community Forums.
You can check the parts lookup site for compatible systemboard for the laptop declared as subsitutes or compatible (under Configuration> Compatible> Commodity List> Systemboards).
Setting expectations, I am not optimistic that you can get a match as shown here in the hardware manual parts list (page 89-90 item 4). Same reason it was also placed on two separate image category (page 85 and 86) where it is structurally different too aside from the components of the Y40 from its Y50 predecessor.
It might be better to replace it like-for-like.
I hope this helps answer your query.