Confirmed. You can use a hub.
Use local USB3.0 port of Rpi4 with USB3.0 hub
Thanks a lot, @setq. Would you share the A-A cables you used? I bought cables from 2 shops on Taobao. None of them works…
The hub I’m using is Orico MH4U (chip: VL817) and I made the A-A cables myself.
Aha! You made the A-A cables! Amazing~~~
I used Orico VL815 hub. Will try homemade cables.
No reverse. Simply connect them one by one.
Aha! Amazing~~~
Hi,
how did you connect the plugs ? no crossing data cable or anything else ? Just connect pin1 to pin1, pin2 to pin 2 … and so on ?
Best regards
I see that I made simmilar topic 
But for me it is not working
I use this hub https://www.alza.sk/axagon-hue-p1a-round-hub-usb-a-d6588597.htm
I bought Orico with chip VL815 and for me it doesn’t work
I bought another usb hub Orico F4U3-U3 also with mentioned chip VL817, but for me it doesn’t work.
System find only hub not devices behind this hub
setq, laughterwym and me needed to made their A-A cables by themself
Finally I got it working and now I know that where was problem.
It was cable problem.
I used connection cable which works only with direct connection to one of usb port on RPi. When I connect it via HUB it was not working.
Now I tried connection together with connection and extension cable, system find usb device via HUB.
So now I have two possibilities.
- two cables: connection + extension
- make my own (by reconfigure existing which I have), maybe somebody can help me how I can make it
An A-A connection cable (= non 1:1 wiring) plugged in an extension cable (= 1:1 wiring) stays a (than longer) connection cable (= non 1:1 wiring)
I made another test. If I connect connection + extension cable both USB3 it doesn’t work only when I use one of them USB2 (in my case extension).
Best way will be to make my own from existing connection cables
before starting USB-3 cable DIY
you may give a short extension cable in combination with your U connector a chance
as indicated here in Phase I Heat issue solved by separating SATA HAT and Pi
I could imagine those 30 cm extension could match that requirements
female part surface should be plastic and thickness not exceed 9.2 mm
Otherwise those will work for sure but are 1m long
in case you still want your HAT mounted you might follow the approach
by using 2 short extentions on HAT connecting to U-Connector
and 2 other short extentions connecting U-Connector to hub
I made some measurements.
U connector is made like extension cable, connections are straight.
Connection cable have switched high speed data cables and standard (usb2) are straight. This is reason why is working with usb3 connection cable + usb2 extension which I mentioned above.
https://www.newnex.com/technology-articles-usb-3-a-to-a-cable-wiring-option.php
USB-2 speed was not sufficient for my purposes
therefore I headed for an USB-3 solution