AMD 500 series motherboard users have experienced USB disconnection problems. When using a keyboard, mouse, external sound card, VR head-mounted display, and other products connected to the USB port of the motherboard, there will be random failures of no response and disconnection .
AMD officially acknowledged the failure on March 7 and gave temporary repair suggestions. AMD declared that the fault should be resolved, and the AGESA 1.2.0.2 microcode will be released soon. AMD’s official Reddit account said, ‘Thank you very much for the feedback submitted to AMD by users of the Reddit community.
With your help, we believe that we have found the root cause of the USB disconnection problem and developed a series of solutions to fix the following problems: USB The port is disconnected, USB 2.0 audio device pops, and USB/PCIe Gen4 cannot coexist.
AMD is preparing the AGESA 1.2.0.2 version of the motherboard microcode and plans to send it to motherboard manufacturers for testing within a week. Consumers are required to download the beta BIOS update in early April this year, and the specific plan will be subject to official information from the motherboard manufacturer.
I users still encounter USB disconnection failures after updating AGESA 1.2.0.2, AMD recommends that users download an independent bug reporting tool and contact AMD customer support.
(Source)