--- a/driver-win.rst	Fri Aug 07 09:40:45 2009 +0300
+++ b/driver-win.rst	Fri Aug 07 09:41:54 2009 +0300
@@ -74,3 +74,18 @@
    Stored in %Windir%\Inf.
  * .pnf
    Precompiled INF File. Stored in %Windir%\Inf.
+
+* Driver type.
+
+** CDC.
+
+  http://support.microsoft.com/kb/837637
+                How to use or to reference the Usbser.sys driver from
+                universal serial bus (USB) modem .inf files.
+
+* Driver class.
+
+See
+
+  http://msdn.microsoft.com/en-us/library/ms791134.aspx
+                System-Supplied Device Setup Classes