VKB-SIM

Hi all i just received STECS throttle, I still have my trusty Gladiator K XT2, now I'm about to get T-Rudder pedals mk.5, and here comes my question. How I can connect this all together? Still 3 separate USB cables to PC from each, or there is some blackbox/interface I can use to connect all 3 to it...

_Gladiator-K_SCG_L_v2_11_5.vkb
or
_Gladiator-K_SCG_v2_11_5.vkb
Not sure what is difference to be honest...

Hi all
I hope someone can help me which FW should I flash to my Gladiator K ?
It is base version with throttle, and grip with button on left side .