so the Zero can do host-mode ?

Can this board be used for both host and client mode simultaneously? I'm trying to find a board which you plug in a keyboard/mouse, which itself connects to a computer and looks like a keyboard/mouse. This essentially will let me do things like hardware shortcuts and remapping of keys without needing any OS support (i.e. CTRL-ESC sends CTRL-ALT-DELETE to the computer, or remapping the caps-lock key to something else.)