So you can control the LEDs with the following accessories, otherwise I don't know how to control the LEDs. I use them myself and that only works separately

Corsair Commander Pro (External, 6x)

Hmm, not that I know of. How do you imagine it with the hanging together (connecting)?

What I know is that there is an accessory where you can attach several fans and there is a program where you can then adjust the fans very cleanly + you can adjust the LEDs so that it makes a rainbow (what I have heard).

Hope could help you

Mfg

LINKS; Phanteks RGB LED-Strip Combo Set (RGB, 21, 400mm)

ASUS RAMPAGE V EDITION 10 (LGA 2011-v3, Intel X99, E-ATX)

MFG

No.is no connection to main board.but this product goes very well(Phanteks RGB LED-Strip Combo Set (RGB, 21, 400mm),i have connected with disen (ASUS RAMPAGE V EDITION 10 (LGA 2011-v3, Intel X99, E-ATX) mainboard works very good
Hope could help you

MFG
N,BALA