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USB 3.1 Gen 2 header on Asus motherboard issue [fixed]

Posted: 11 Jun 2023, 15:59
by Blín D'ñero
That's what i had: a giant issue with the USB 3.1 Gen 2 header on my Asus motherboards, namely:

My Android smartphone no longer was recognized. many many hours over many days trying to solve this... and gave up. [but not really, it keeps nagging...]

Now i finally understand.

This cable is what i used to connect my USB3 / card reader frontpanel to said header on the motherboard(s).

Everything worked in the past with this frontpanel, when i still had it plugged in to the traditional USB 3 Gen 1 header at the bottom of the motherboard(s). But that place is too close to the bottom PCI-e slot where i have my audio card. I already broke one frontpanel's usb plug, so i decided to finally start using the motherboard's USB 3.1 Gen 2 header.

I had to buy the abovementioned cable. (I actually did not buy it at amazon, i bought it here at HighFlow).
But the description at amazon article has in the end given me the final answer.
for ASUS Motherboard . Only support usb3.1/usb3.0 device, it can't work at USB2.0(480Mbps)
This explains why the Android phone (which has USB-C shaped out plug but uses in fact a USB 2.0 connection through its original Samsung USB-C shaped to USB 2 cable, cannot be recognised through that header, thus through the entire frontpanel. Only the charging works through those USB ports.

Too bad. All other devices work: my USB 3 sticks, my camera's SDHC cards etcetera.

So for transferring pictures from my smartphone to PC i now use an external USB 3 bay connected to a backside external USB 3.0 port on my PC, works fine.

Re: USB 3.1 Gen 2 header on Asus motherboard issue [fixed]

Posted: 11 Jun 2023, 17:03
by Blín D'ñero
Again from this page:
About this item
  • for ASUS Motherboard . Only support usb3.1/usb3.0 device, it can't work at USB2.0(480Mbps)
  • USB 3.1 Front Panel Header to USB 3.0 20Pin Front Panel HeaderExtension Cable 20cm 0.65ft
  • USB 3.1 port interface uses USB 3.0 pin set and more. It is design to be backwards compatible (will explain later).
  • The USB 3.1 port interface is using the USB 3.0 pin set and more. It is design to be backwards compatible.There are no official release of the specs for the USB 3.1 header yet (as of this writing),
  • There are no official release of the specs for the USB 3.1 header yet (as of this writing), But first motherboard with this is the ASUS ROG MAXIMUS IX FORMULA,STRIX Z270I/Z270G etc.
So in fact it is not entirely USB backwards compatible. :roll: