Lcd adapter voltage

just got my board and i want to order a lcd adapter for a reprap discount lcd. I have an option for voltage regulation on the adapter. My question is if i am using an atx power supply with 5volt output do i need a regulator? i see a 5volt slot on the adapter board, is this for a regulator to be soldered to or is it integrated on the board?

Imported from wikidot

if using an atx psu, you don’t need any voltage regulators

cool. thanks for the reply