>>15227382
>Also i am not sure if the PS2 keyboard was released outside of japan.
You didn't need one. Any standard USB keyboard worked fine, and it was up to the developers to add in support on a per-game basis. I don't remember if EQOA had it… but it probably did. FFXI and PSU definitely had keyboard support.
It was only systems that had no USB ports (NGC/Dreamcast) or modified USB ports (Xbox) that you needed to buy adapters or special proprietary keyboards. Even then, they were still just standard keyboards with a proprietary plugin and sold for a premium.