It won't work. The port on the phone/tablet can usually only do either MHL/HDMI or USB, but not both at the same time. The USB that comes out of the adapter is there only to power the adapter and hold the phone's charge.
AFAIK only Samsung phones have a different connector and hardware capable of doing both at the same time, but... when they do the USB port is in host mode (so you can connect a screen and keyboard/mouse), and for the Inspire we would need it in device mode.