Xerox WorkCentre PE16
At least the Samsung SCX-4216F should work with the external samsung backend (libsane-samsung_scx4x16). The Xerox doesn't seem to work with that backend.
The Xerox PE16 is an identical clone to the machine called "Samsung SCX-4216F". The Xerox machine differs from the Samsung one only by front-side sticker. Samsung is a primary manufacturer, though Xerox sells more units (probably). However, the USB descriptors are different and the Samsung backend doesn't seem to work.
(Xerox) T: Bus=01 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0924 ProdID=4220 Rev= 1.00 S: Manufacturer=Xerox S: Product=Xerox WorkCentre PE16 S: SerialNumber=6758-04010638864 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=usblp E: Ad=03(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms (Samsung) T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=04e8 ProdID=3409 Rev= 1.00 S: Manufacturer=Samsung S: Product=SAMSUNG SCX-4x16 Series S: SerialNumber=6758-03120160501 C:* #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=usblp E: Ad=03(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
If anything is wrong or missing on this page please file a bug report or use the the form for adding an unsupported device.
If you own an unsupported scanner, please send as much information as possible. Especially the output of sane-find-scanner -v -v and/or cat /proc/scsi/scsi (for SCSI scanners) or cat /proc/bus/usb/devices (for USB scanners) can help. If you dare to open the scanner, have a look at the text that's printed on the chips. That may help to identify the chipset. If you know that the scanner is similar to another one (e.g. supported by the same Windows driver), please also mention this fact.
Are you a manufacturer or vendor of scanners and one of your scanners is not supported by SANE yet? In this case please have a look at our information for manufacturers.