Have some questions for PS3 TE dual mod

I'm going to dual mod my ps3 te stick (round 2) with a madcatz 4716 and I'm going to use a DPDT switch.

My questions are:
1) If I'm going to solder to the points on the turbo PCB that says and gnd, vcc, etc to the dpdt do I need to desolder/cut the USB cable that is connected or can I leave it connected and solder the data lines to the DPDT switch?

2) How do I find out what revision my madcatz pad is? So if it is rev.e, rev.g, etc.

Thanks in advance for helping a n00b :)