NUC hard drive format

Getting ready to install Lakka on my Nuc. It has brand new ssd installed (240 gb). What format does the ssd need to be in for Lakka to install on it? Was going to go with ex4, but thought I would ask first to save me the time of having to reformat it. Thanks.

Pretty sure it formats the drive automatically when you install it. So I don’t think it matters.