Chipset was identified.

unsupported/hp-scanjet-3690.html

@@ -31,7 +31,7 @@
     </p>
     <h2>Chipset</h2>
     <p>
-      Probably GL646_HP
+      GL646_HP
     </p>
     <pre>
 26-00204-00A
@@ -41,9 +41,9 @@ EliteMT 100Mhz
     </pre>
     <h2>Comments</h2>
     <p>
-      If this is the GL646 chip, maybe the <a
+      Maybe the scanner can be added to the <a
       href="http://www.meier-geinitz.de/sane/genesys-backend/">Genesys
-      backend</a> can be used, when it's finished?
+      backend</a>?
     </p>
     <p>
       Same scanner as <a href="hp-scanjet-3670c.html">3670c</a>?
@@ -53,8 +53,7 @@ EliteMT 100Mhz
     </p>
     <h2>Output of /proc/bus/usb/devices or sane-find-scanner -v -v</h2>
     <pre>
-
-&lt;device descriptor of 0x03f0/0x1405 at 005:003&gt;
+&lt;device descriptor of 0x03f0/0x1405 at 003:009 (Hewlett-Packard HP Scanjet Scanner)&gt;
 bLength               18
 bDescriptorType       1
 bcdUSB                1.10
@@ -65,9 +64,9 @@ bMaxPacketSize0       8
 idVendor              0x03F0
 idProduct             0x1405
 bcdDevice             1.00
-iManufacturer         1 ((null))
-iProduct              2 ((null))
-iSerialNumber         12 ((null))
+iManufacturer         1 (Hewlett-Packard)
+iProduct              2 (HP Scanjet Scanner)
+iSerialNumber         12 (CN373S2558)
 bNumConfigurations    1
  &lt;configuration 0&gt;
  bLength              9
@@ -122,21 +121,22 @@ bNumConfigurations    1
     this is not a GT-6801 (bNumEndpoints = 3)
     checking for GT-6816 ...
     this is not a GT-6816 (bDeviceClass = 255, bInterfaceClass = 255)
+    checking for GT-8911 ...
+    this is not a GT-8911 (check 1, bDeviceClass = 255, bInterfaceClass = 255)
     checking for MA-1017 ...
     this is not a MA-1017 (bDeviceClass = 255, bInterfaceClass = 255)
     checking for MA-1015 ...
     this is not a MA-1015 (bcdUSB = 0x110)
     checking for MA-1509 ...
-    this is not a MA-1509 (bEndpointAddress = 0x81, bmAttributes = 0x2, wMaxPacketSize = 0x40, bInterval = 0x0)
+    this is not a MA-1509 (bEndpointAddress = 0x2, bmAttributes = 0x2, wMaxPacketSize = 0x40)
     checking for LM983[1,2,3] ...
     this is not a LM983x (bDeviceSubClass = 0xff)
     checking for GL646 ...
     this is not a GL646 (bDeviceClass = 255, bInterfaceClass = 255)
-    checking for GL660+GL646 ...
-    this is not a GL660+GL646 (bDeviceClass = 255, bInterfaceClass = 255)
-&lt;Couldn't determine the type of the USB chip&gt;
+    checking for GL646_HP ...
+&lt;This USB chip looks like a GL646_HP&gt;
 
-found USB scanner (vendor=0x03f0, product=0x1405) at libusb:005:003
+found USB scanner (vendor=0x03f0 [Hewlett-Packard], product=0x1405 [HP Scanjet Scanner], chip=GL646_HP) at libusb:003:009
 
 
 T:  Bus=05 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  3 Spd=12  MxCh= 0