My version of the SM-G900F has _two_ high-frequency cables going from the motherboard to the USB module. One blue (wired like yours) and one grey (wired from the center of the motherboard, left of the blue one, through the "crack" near the top of the duct the blue one follows and exits at the bottom of the duct turning left and connecting beneath the CY8C20075-24LKXI.
I had to replace the display _and_ the USB module (damaged it while disassembling the phone).
Question: Now I have replaced both display AND USB module - and the phone ALMOST works. The problem it experiences is a very much lacking connectivity in terms of phone and 3/4G internet. Wireless does work. My question is thus, could I have bought an incorrect USB module? The new one has all the same connectors. Could I have forgotten something else? Is there a gnome in my phone? Are the skies falling?
If you happen to know - or if you happen to be a smart Alec that happens to be right as well, please chip in - I'd love to have my phone ok. :)