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USB 3.2 Gen 2 header on Asus X-570 motherboard not downwards compatible?

Level 7


USB 3.2 Gen 2 header on Asus x-570 motherboard not downwards compatible?
Hello Asus. I am a user of 2 x TUF GAMING X570-PRO (WI-FI), and a ROG Strix X570-E Gaming. 😎

On all three i have connected a nice USB3 / SDXC / multi card reader frontpanel. It used to work fine when still  connected through the USB 3 gen 1 header (U32G1_12) on the bottom side of the motherboard. But because that location is so crowded (especially with an audio card in the bottom pci-e slot),  which already damaged one USB 2 cable and a mobo header, i chose to move it to the UB3.2 Gen 2 header (U32G2_C5): it has a better location in the mid section of the motherboard.
So : this cable is what i bought in order to connect my USB 3  card reader frontpanel to the UB3.2 Gen 2 header (U32G2_C5) on the motherboard(s).

But now my PC's cannot recognize my smartphone nor its storage through the frontpanel anymore.
All SD cards and USB 3 sticks still work fine, but for my smartphone to be seen in Windows 10, i now have to use an external hub connected to one of the  USB plugs on the backside of the motherboard(s).

I understand that smartphones use USB 2.0 to connect to PC's.

The small print next to the cable that i had to buy, says:

"for ASUS Motherboard . Only support usb3.1/usb3.0 device, it can't work at USB2.0(480Mbps)"

Why is this ?

Is the header downwards compatible including USB 2, just not the cable?

If it is just this specific cable having this shortcoming and not the header on the Asus motherboard as such, can you recommend me a better cable than the one i bought to connect my frontpanel's female plug with the USDB 3 Gen 2 header? One that IS downwards compatible including the old USB2.0 480Mbps?


Customer Service Agent

Hello, @blindnero 

I apologize for any inconvenience caused by the delayed response, as there have been consecutive holidays at our location in recent days.
USB's backward compatibility means that newer versions of USB devices (such as USB 3.0 or USB 3.1) can interoperate with older versions of USB ports (such as USB 2.0 or USB 1.1).
However, based on your description, it seems that the cable you purchased is not backward compatible.
We recommend cross-testing with other cables that meet the specifications or support backward compatibility to ensure stable data transmission.

Thank you.

Thanks for your response.

Well can you recommend me a better cable ?  Because i can find none on the internet that says it is backwards compatible in the description and i want to avoid buying another "bad" one. Do you know of one that Asus recommends?