I will review it by next weekend(8/14). Thanks. From: devel@edk2.groups.io On Behalf Of Feng Libo Sent: Thursday, August 6, 2020 9:25 AM To: Feng Libo ; devel@edk2.groups.io Subject: Re: [edk2-devel] [PATCH] MdeModulePkg/UsbBusDxe: some USB PenDisk fails enumeration. Hello, could anyone review this PATCH? We encountered the USB enumeration problem and the patch is based on the Microsoft post as below. https://techcommunity.microsoft.com/t5/microsoft-usb-blog/how-does-usb-stack-enumerate-a-device/ba-p/270685#:~:text=%20How%20does%20USB%20stack%20enumerate%20a%20device%3F,a%20request%20for%20the%20USB%20Device...%20More%20 Thanks Best Regards Feng Libo