Question Are there motherboards with RAM slots behind motherboard?

[Bzz2]

I'm building peculiar system that I want to make as thin as possible and RAM sticks keep getting in my way.
Are there designs with either slanted ports or placed on the backside of the motherboard?
And I'm talking about modern designs, possibly for AM4 socket

 

[Newtonius]

Nope.

 

[SkyNetRising]

There are motherboards that use SODIMM ram modules. Those are positioned flat on motherboard. Result is very slim.

https://www.asrock.com/MB/AMD/A320TM-ITX/index.asp