You can add or configure most virtual machine hardware settings during virtual machine creation or after you create the virtual machine and install the guest operating system.
When you configure the virtual machine hardware, you can view the existing hardware configuration and add or remove hardware. You can change nearly every setting that was selected during virtual machine creation.
Not all hardware devices are available to every virtual machine. The host that the virtual machine runs on and the guest operating system must support devices that you add or configurations that you make.