this is a large motherboard. To install it i had to move the dvd and disk drives around in my large tower case. Once i had installed my legacy drives I powered it up to find that it refused to recognise my ssd or hard drives as a boot drive. I could not load any form of windows or recover anything, presumably because window has to have a boot drive to load onto. After trying every option and searching the internet i discovered that to use CSM to recognise legacy drives as boot drives i had to install a third party graphics card - extra cost and no real value to me as the motherboard graphics would have been fine for me. CCL, who supplied the board and a Ryzen 5 8500 g processor eventually suggested that the issue may be caused by the CPU motherboard combo. Once the graphics card was installed it was relatively simple to switch on the CSM option, switch the boot process from UEFI to legacy, and reinstall windows. The onboard Wi-Fi does not work out of the box and the drivers to get it working are not included in the box - i had to dig out powerline adapters to get a network up and running, download the Wi-Fi drivers from ASUS - not a great approach. It is up, running and working fine but better documentation would have been helpful.