Using a USB 3.0 Type A Male to Male cable with a Type A Female to Female coupler

My computer's USB 3.0 ports are not easily accessible so I essentially need to extend the port. In order to do this I am trying to use a M-M type A cable running from the computer into a F-F type A coupler which I can then plug my USB 3.0 device into. However, when I attempt this, the device reverts to USB 2 mode.

After testing the pins of the cable and the coupler, I saw that the M-M cable swaps the RX and TX pins but the F-F coupler does not. I attempted to rewire the cable so that the pin configuration would be the same as if it was the computers direct port, however that didn't work. Is there anything else I can try or is the combination of cable to coupler just not possible? PS I cannot just use a USB hub instead as the coupler needs to be IP68 rated. The coupler I'm using is the U325-000-IND from Tripp Lite. Any help would be appreciated, thanks.

Edit: Also worth adding is that the device works perfectly when plugged directly into the computer port, but when plugged into the coupler and cable, 3.0 does not work.

Solution 1:

the M-M cable swaps the RX and TX pins but the F-F coupler does not. I attempted to rewire the cable so that the pin configuration would be the same as if it was the computers direct port, however that didn't work.

You clearly have wrong M-M cable. In specs, there no such thing, people make all sorts of crazy cables, so you got a wrong one.

More, you can't "rewire" the cable easily, without compromising the super-speed signal integrity, it is a very delicate solder job. And even if you manage to do so, 70cm of cable and two extra connectors will likely kill the signal anyway, or make it marginal, so the link will be unstable.

So your solution would be to search deeper and find an extender with proper environmental rating, or order a custom-made cable.