I have a G19 and a mouse. And both of these wont work when i try to do a installation of Windows 7. It will get up to the first dialog screen but i cant go any further due to the devices not working. In the bios the USB legacy is enabled. and the mouse also works in the bios.
This the MB i have...
asrock
bios
compatibility
configuration
devices
fatal1tyz270
gaming
hardware
input devices
installation
keyboard
legacy support
mouse
setup
troubleshooting
usb support
user support
windows 7
wireless