I think J stands for japan and w stands for westXaj are EU consoles... xaw are US consoles if im not mistaken...so yes both are legit
I think J stands for japan and w stands for west

I think the difference is cosmetic. The XAJ switches have a few different regulatory logos which are probably required in Europe (and Japan I guess?). Also note the XAJ switch is labeled "HAC-S-JP/EU" while the XAW is labeled "HAC-S-US/AU"Yeah why so many used j model in uk? Will they cause any difference?