These two devices, PSC 2110 and PSC 2210, are very good for an All In One. However there are some differences between the two of them. For starters the PSC 2210 has a digital card reader that will read six different digital cards used by most of the digital camera manufacturers. It also posses a Fax machine and a scanner that is 1200 X 2400 in its resolution. The 2110 in of it self has only three functions. Scanning, copying, and printing but only has a scanning resolution of 600 X 1200. Both printers are capable of 4800 X 1200 resolution using HP's six color printing process on photo paper. Envelop feeding is as simple as placing the envelop in the designated slot in the feed tray.