diff --git a/ChangeLog b/ChangeLog
index 89db99c9f..79b669ee9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,8 @@
 	  Automatically create new languages on make update. Automatically
 	  generate list of DISTFILES. Added template for header used in new
 	  po files. Updated documentation.
+	* doc/descriptions/unsupported.desc: Added Genius Colorpage Vivid III.
+	  Added more info for Plustek OpticPro 1212U and U12/UT12.
 
 2003-02-05  Henning Meier-Geinitz <henning@meier-geinitz.de>
 
diff --git a/doc/descriptions/unsupported.desc b/doc/descriptions/unsupported.desc
index f45a3ad62..0a4613db9 100644
--- a/doc/descriptions/unsupported.desc
+++ b/doc/descriptions/unsupported.desc
@@ -119,6 +119,12 @@
 :status :unsupported
 :comment "Not supported. Is reported to use the GL646 chipset (see link)."
 
+:model "Colorpage Vivid III"
+:url "http://www.meier-geinitz.de/sane/misc/genius-colorpage-vivid-III.txt"
+:interface "USB"
+:status :unsupported
+:comment "Not supported. Vendor/product: 0x07b3/0x0001. Same ids as the Plustek OpticPro 1212U and older U12/UT12. Maybe the same chips are used?"
+
 ;********************************************************************************************
 
 :mfg "Hewlett-Packard"			; name a manufacturer
@@ -258,12 +264,12 @@
 :model "OpticPro 1212U"
 :interface "USB"
 :status :unsupported
-:comment "Chipset unknown"
+:comment "Vendor/product: 0x07b3/0x0001. Same ids as early U12/UT12 models, maybe the same chip?"
 
 :model "OpticPro U12/UT12"
 :interface "USB"
 :status :unsupported
-:comment "All devices using product ID 0x0001 are not supported, for others see Plustek backend."
+:comment "All devices using product ID 0x0001 are not supported, for others see Plustek backend. The older models seem to use a P98003 parallel port ASIC and a GenesysLogic parport-over USB brigde. The P98003 is also used by the P12 and PT12 models."
 
 :model "OpticPro A3U"
 :interface "USB"