Hi all~ I'm working on MCB4357 with the USB component ver 6.7 of MDK-Professional Middleware. I'm trying to work high speed usbhub host and connecting to low speed devices. I tried to modify usbh_hci[0].def_pipe's Hub address, Hub port. and I called USBH_ControlTransfer function. but~ SPLIT packet's Hub address, Hub port did not change. How to change the usb SPLIT packet's Hub address, Hub port? Thanks~