This port is for a printer filter of EPSON PM-770C. The filter is called Photo Image Print System for Linux and there exist the filters for other EPSON bubble jet printers. By using this driver you can print out as high quality as you use the Windows driver. See the below URL: WWW: http://www.epkowa.co.jp/ And then this port has a modified filter "filter770.rev" which is useful to print out more than one page. If you use it, you add the next entries into /etc/printcap. pm770c|EPSON PM-770C:\ :lp=/dev/lpt0:\ :sh:\ :if=/usr/local/libexec/pips770/filter770.rev:\ :sd=/var/spool/lpd/pm770c:\ :mx#0:\ :lf=/var/log/lpd-errs