I made a small change to tidy things up a bit. My previous setup did not allow the compartment with the USB outlets to be closed because the MayFlash adapters stuck out of the compartment a bit and it also blocked the 12V outlet which I need to use because I use it to power the phone dock.
I wanted to set something up so that everything can be connected and "always on" all the time but being able to close the compartment door so that no unsightly wires or cables can be seen (my original reason to look for a wireless game controller in the first place!).
The key part I needed is a short USB 3.0 extension cable with a 90-dgree left angle connector so that I can plug that into a USB port without blocking the other USB port used by TeslaCam/Sentry while also not blocking the 12V outlet that is used to power the phone dock plus one additional USB device.
The width of the compartment is so perfect that it fits everything snugly with the USB cord wrapped in a loop. At a future time. I'm going to try and fish the USB extension cord underneath the rubber mat, just like the phone connection dock cable but not sure if the wire guide is wide enough to do that but for now the following setup allows me to connect everything so that everything is always online while still leaving one USB port free up front for powering an additional USB device.
Short USB 3.0 Extension Cable, 90 Degree USB 3.0 Adapter
https://amzn.to/2olSxB9
Two USB drives (one for TeslaCam/Sentry and the other for USB audio). I wanted the TeslaCam drive to be plugged directly into the USB port with no hub so it has a direct connection to the car, as that's the most important USB component. The USB drive used for USB audio is connected to the car through the 3 port mini hub.
https://amzn.to/2osV0tK
3 port mini hub connects to 2 MayFlash adapters to be used with 2 wireless XBox controllers plus a USB drive for music.
https://amzn.to/2nNC0Wk
Two MayFlash adapters to connect two wireless XBox controllers:
https://amzn.to/2nOGCeM
And of course the 2 XBox controllers
https://amzn.to/2mXZCrf
Low profile 12V dual USB outlet for powering phone dock
https://amzn.to/2ouKMJp
And finally Tesla sells the cable that allows you to blind holster your phone for charging.
Model S/X Quick Connection Phone Dock
View attachment 460834