when I purchase it , I be impress by the ability to project show without a pc attach . but in practice it seem there be more option than I have realize . I try out the 802.11 g wireless connection to a laptop . it work fine for slide , but be unacceptably jerky for video -lrb- mpeg2 and dvd 's -rrb- although this may have be due to the older laptop I use . I do not try out the multiple laptop connection feature but presume it work the same . I also show my presentation without a pc . this process require you to install they software , and then to convert you powerpoint . ppt show to the epson-recognizable format . place the resultant file on you usb thumb drive which plug into the projector and off you go . worked perfectly on simple presentation , but do not sequence some of my fly-in label properly . -lrb- they all three fly in at once . -rrb- so if you have a more complex presentation , I would be prepare for surprise . it show a folder of -lrb- non-powerpoint -rrb- jpeg image without a hitch . advance they with the remote be intuitive . but `` pc-free '' projection of mpeg file be hit-and-miss . one work fine , one do not project at all . other feature -lrb- auto-keystone correction etc. -rrb- all work as expect . I like the product , but I be not depend on it for video .