Acer P7203B - Manual (Page 44)

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Display over USB
Introduction
Display over USB(DoUSB) projection is one easy function to project NB/PC screen
on projector through one USB cable (USB type A to miniUSB) without installing
any driver.
If enduser un-plug the USB cable, projector will stop the projection and return
to standby status.
How to start DoUSB
Step 1: Adjust projector source to USB B, you will find below projecting screen.
Step 2: Connect the USB cable to both Projector and NB/PC, plug the mini USB
to Projector side and type A host to NB/PC side.
Step 3: Start to display NB/PC's screen through USB automatically.
Step 4: Unplug the USB cable to stop displaying over USB.
Note: only support one NB to one projector (1-to-1 screen
projection) by DoUSB connection.