$wim="C:\Users\mike\Downloads\SynologyRestoreMedia_Creator-2.6.3-2551(3101)\iso\sources\boot.wim"
$mount="C:\Users\mike\Downloads\_mount\"
$drivers="C:\Users\mike\Downloads\_drivers"
Get-WindowsImage -ImagePath "$wim"
DISM /Mount-Wim /WimFile:"$wim" /Index:1 /MountDir:"$mount"
DISM /Image:"$mount" /Add-Driver /Driver:$drivers /recurse /forceunsigned
DISM /Unmount-Wim /MountDir:"$mount" /Commit