Whats the difference between A/M.2 and E/M.2 in motherboards?

[LotzaLemons]

While searching for a cheap, yet powerful motherboard for my budget gamming pc, I came across two motherboards that seem to be almost the same exact thing, these two mobos being the Asus H110M-A/M.2 Micro ATX LGA1151 Motherboard and the Asus H110M-E/M.2 Micro ATX LGA1151 Motherboard. The only difference I see is that one says "A/M.2" and the other says "E/M.2". I was just curious as to what this means, and what motherboard would be a better choice, they are both pretty much the same price.

 

[Nine Layer Nige]

According to the Asus spec, the E has an additional DVI output on the backplate and gigabyte Lan controller.

 

[Dragos Manea]

Usually -A motehrbaords are more equiped then the -E motehrboards, for example -A has more phases for cpu power and some things like extra ports and stuff like that. -E motherboards are more budget friendly but has less future adn weaker power phase design.