diff --git a/backend/umax.desc b/backend/umax.desc
index 85fd0f4fa..effbf10c8 100644
--- a/backend/umax.desc
+++ b/backend/umax.desc
@@ -10,7 +10,7 @@
 ;
 
 :backend "umax"                   ; name of backend
-:version "1.0-18"                 ; version of backend
+:version "1.0-21"                 ; version of backend
 :status :stable                   ; :alpha, :beta, :stable, :new
 :manpage "sane-umax"              ; name of manpage (if it exists)
 :url "http://www.wolfsburg.de/~rauch/sane/sane-umax.html" ; backend's web page
@@ -27,115 +27,172 @@
 :url "http://www.umaxweb.com.tw/"
 :url "http://support.umax.co.uk/"
 :model "parallel scanners"        ; name models for above-specified mfg.
-:comment "Not supported!!!"
+:interface "Parallel"
+:comment "Not supported - will propably never be supported by this backend"
 :model "USB scanners"
-:comment "Not supported!!!"
+:interface "USB"
+:comment "Not supported - will propably never be supported by this backend"
 :model "Vista S6"
+:interface "SCSI"
 :comment "OK"
 :model "Vista S6E"
+:interface "SCSI"
 :comment "OK"
 :model "UMAX S-6E"
+:interface "SCSI"
 :comment "OK"
 :model "UMAX S-6EG"
+:interface "SCSI"
 :comment "OK"
 :model "Vista-S8"
+:interface "SCSI"
 :comment "OK"
 :model "Supervista S-12"
+:interface "SCSI"
 :comment "OK"
 :model "UMAX S-12"
+:interface "SCSI"
 :comment "OK"
 :model "UMAX S-12G"
+:interface "SCSI"
 :comment "OK"
 :model "Astra 600S"
+:interface "SCSI"
 :comment "OK"
 :model "Astra 610S"
+:interface "SCSI"
 :comment "OK"
 :model "Astra 1200S"
+:interface "SCSI"
 :comment "OK"
 :model "Astra 1220S"
+:interface "SCSI"
 :comment "OK"
-:model "Astra 2200W"
+:model "Astra 2200 (SU)"
+:interface "SCSI"
 :comment "OK"
 :model "Astra 2400S"
+:interface "SCSI"
 :comment "OK"
 :model "Mirage D-16L"
+:interface "SCSI"
 :comment "OK"
 :model "Mirage II"
+:interface "SCSI"
 :comment "Not tested"
 :model "Mirage IIse"
+:interface "SCSI"
 :comment "Not tested"
 :model "PSD"
+:interface "SCSI"
 :comment "OK"
 :model "PowerLook"
+:interface "SCSI"
 :comment "Not tested"
 :model "PL-II"
+:interface "SCSI"
 :comment "Not tested"
 :model "PowerLook III"
-:comment "Not tested"
+:interface "SCSI"
+:comment "OK"
 :model "PowerLook 2000"
+:interface "SCSI"
 :comment "Not tested"
 :model "PowerLook 3000"
+:interface "SCSI"
 :comment "Not tested"
 :model "Gemini D-16"
+:interface "SCSI"
 :comment "OK"
 :model "UMAX VT600"
+:interface "SCSI"
 :comment "not tested"
 :model "Vista-T630"
+:interface "SCSI"
 :comment "OK for some firmwareversions, on others only lineart OK"
 :model "UC 630"
+:interface "SCSI"
 :comment "Version 1.6(?) or 2.8(?) OK, others only lineart OK"
 :model "UG 630"
+:interface "SCSI"
 :comment "OK"
 :model "UG 80"
+:interface "SCSI"
 :comment "OK"
 :model "UC 840"
+:interface "SCSI"
 :comment "Version 1.6 OK, others only lineart OK"
 :model "UC 1200S"
+:interface "SCSI"
 :comment "unknown - please try"
 :model "UC 1200SE"
+:interface "SCSI"
 :comment "unknown - please try"
 :model "UC 1260"
+:interface "SCSI"
 :comment "Version 1.6 OK, others unknown"
 
 :mfg "Linotype Hell"              ; another manufacturer...
 :url "http://www.heidelberg-cps.com/"
 :model "Jade"
+:interface "SCSI"
 :comment "OK, SCSI-ID=LinoHell Office"
+:model "Jade"
+:interface "SCSI"
+:comment "OK, SCSI-ID=LinoHell JADE"
 :model "Jade2"
+:interface "SCSI"
 :comment "OK, SCSI-ID=LinoHell Office2"
 :model "Saphir"
+:interface "SCSI"
 :comment "Not tested"
 :model "Saphir2"
+:interface "SCSI"
 :comment "OK, SCSI-ID=LinoHell SAPHIR2"
 :model "Saphir Ultra"
+:interface "SCSI"
 :comment "Not tested"
 :model "Saphir Ultra II"
+:interface "SCSI"
 :comment "Not tested"
 :model "Saphir HiRes"
+:interface "SCSI"
 :comment "Not tested"
 :model "Opal"
+:interface "SCSI"
 :comment "Not tested"
 :model "Opal Ultra"
+:interface "SCSI"
 :comment "Not tested"
 
 :mfg "Vobis/Highscreen"
 :url "http://www.vobis.de/"
 :model "Scanboostar Premium"
+:interface "SCSI"
 :comment "OK, SCSI-ID=LinoHell Office2"
 
 :mfg "Escom"                      ; another manufacturer...
 :model "Image Scanner 256"
+:interface "SCSI"
 :comment "OK, SCSI-ID=UMAX UG 80"
 
 :mfg "Nikon"                      ; another manufacturer...
 :url "http://www.nikon.com/"
 :model "AX-210"
+:interface "SCSI"
 :comment "OK"
 
 :mfg "Genius"                      ; another manufacturer...
 :url "http://www.genius.kye.de/"
 :model "ColorPage-HR5 (Pro)"
+:interface "SCSI"
 :comment "OK, SCSI-ID=KYE ColorPage-HR5"
 
+:mfg "Epson"                      ; another manufacturer...
+:url "http://www.epson.com/"
+:model "Perfection 600"
+:interface "SCSI"
+:comment "OK, SCSI-ID=EPSON Perfection600"
+
 ; :comment and :url specifiers are optional after :mfg, :model, :desc,
 ;  and at the top-level.