This means that it has separate document trays for incoming faxes and printed or copied documents. It can produce about 18 pages per minute at 600 x 600 dpi, and has different quality settings. It has other features, like enlarging or shrinking documents electronically, as well as caller ID for the fax machine which displays the incoming number before accepting the fax call. The FLB811 also includes the Read-Iris Pro software, which converts paper documents into computer-editable text documents, and this software has a high accuracy rate and recognizes 53 languages. Other features include a 40-page automatic document loader and a 250-page capacity tray. Note that this printer (and the included software) is compatible only with Windows 98/Me/2000/XP. It is intended for home or basic office usage.