Discussed in many previous threads. Here's one that's a STICKY posted #2 down from the top in this forum.
Even though it's for a 640P, the same applies to ALL Acer/Benq parallel port scanners. Please read the next time before posting. Also, find and learn to use the Search this Forum
button found at the top-right of this forum.
And what's up with the weird member name? ie: mira scan v3.04