Acer U5220 Series User Manual page 21

# Description
6 S-Video cable
7 RS232 cable
Note: To ensure the projector works well with your computer,
please make sure the timing of the display mode is compatible
with the projector.
Note: Some smartphones require a converter (supplied by the
smartphone maker) to enable the MHL function.
Note: Compatible HDMI/MHL dongles: WiHD, MWA3 AM,
Android, Chromecast dongle.
Note: "*" USB drive limitation, do not support power.
# Description
13* USB storage device/USB Wifi adapter
(Optional)
11