This is in: http://www.berklix.com/~jhs/src/bsd/fixes/FreeBSD/ports/gen/graphics/sane-backends/ Other trivial diffs with product code number: http://www.berklix.com/~jhs/src/bsd/fixes/FreeBSD/src/gen/share/man/man4/uscanner.c.REL=6.1-RELEASE.diff http://www.berklix.com/~jhs/src/bsd/fixes/FreeBSD/src/gen/sys/dev/usb/usbdevs.REL=ALL.diff http://www.berklix.com/~jhs/src/bsd/fixes/FreeBSD/src/gen/sys/dev/usb/uscanner.c.REL=6.1-RELEASE.diff HP ScanJet 4400C Description of jhs@ unit: On top of lid: 4400c Underneath: C9870A 12V 1A Centre positive. Interfaces: USB,XPA,parallel in & out. 3 chips on board connected to chassis, where USB socket connects. Squarish SMD Hi Density Chip 13010070-5011 17203S1 129DZ TAIWAN Longish Medium Density SMD Chip Elite MT 72MH z M11B416256A -35J DZC 1 HB261 0141 1/10th Inch spacing Chip, 16 pin Texas Instruments 18A744M ULN2003AN No details noted here for any chips on travelling scan mechanism. Hardware Description from web.: From http://www.neoseeker.com/Hardware/Products/4400c/ The HP ScanJet 4400C has a flatbed design. It has a optical resolution of 1200x1200 dpi. It can scan a color document in about 40 seconds and a B&W document in about 35 seconds. It supports both parallel and usb connection. This scanner is PC/Mac compatible. It also includes 5 configurable buttons. Release Date: Q4 2001 http://www.itweek.co.uk/computeractive/hardware/2012918/hp-scanjet-4400c Review: $90 Software Public Domain: http://sourceforge.net/projects/hp44x0backend/ hp_rts88xx Scanjet HP4470c family SANE backend (hp_rts88xx). http://projects.troy.rollo.name/rt-scanners/chip.html There is a demo SANE backend for the HP ScanJet 4400C and 4470C at http://hp44x0backend.sourceforge.net that can do greyscale scanning at 300 / 600 DPI. http://www.sane-project.org/cgi-bin/driver.pl?manu=hew&model=4400&bus=any grayscale 300DPI only http://hp44x0backend.sourceforge.net/ HP4400C UNTESTED ALPHA http://www.buzzard.me.uk/jonathan/scanners-usb.html ScanJet 4400C, 4470C These scanners uses a RealTek RTS8891 chip to drive the scanner. Requests for information on this chip to RealTek have gone unanswered. There is some very preliminary software for these based on reverse engineering the Windows driver. More information on this can be can be found at SourceForge http://reapoff.sourceforge.net/hpscanner/Default.htm michael.cohen @ netspeed.com.au has got it working in grey scale etc http://www.linuxquestions.org/hcl/showproduct.php?product=108&cat=all I have spoken to HP about this. The scanner uses a parallel port but has a USB to parallel converter in it. http://home.foni.net/~johanneshub/testtool.html http://www.oreillynet.com/cs/user/view/cs_msg/23440 i have too an hp 4400 c seems to be in fact a UMAX one with USB converter inside.:1