New
#11
From what you describe makes no sense. I've a few Gigabyte (Z87, Z170, Z270, Z390) boards with the UEFI bios and never had an issue where I needed something plugged into the front port in order to get the motherboard's back ports to work. I don't care what board we're talking about, that's not supposed to happen, and it's extremely odd. Sounds like you need to check your USB cable going to the front ports. The first thing you should try if that's happening is disconnect the front headers (USB cable) from the motherboard, then try the thumb drive again.
As for Gigabyte's tech support, I've dealt with them in the past and would say they're ok. Speaking of tech support (actually customer service) it was Asus who drove me to Gigabyte.
Anyway, I would never tell anyone not to buy an Asus board because they are good motherboards; I just prefer Gigabyte boards (which are also pretty good). Though I do wish Gigabyte had Asus's UEFI layout.
Oh, and speaking of layout, you might revisit your owner's manual to figure out Gigabyte's UEFI layout.