diff --git a/etc/envsys.conf b/etc/envsys.conf
index 92a383b5dbdd..5e1ef188467e 100644
--- a/etc/envsys.conf
+++ b/etc/envsys.conf
@@ -1,12 +1,29 @@
-# $NetBSD: envsys.conf,v 1.1 2007/07/01 07:55:52 xtraeme Exp $
+# $NetBSD: envsys.conf,v 1.2 2007/07/07 09:31:54 xtraeme Exp $
 #
-# Format is the following:
+# The format used is the following:
 #
 # device:sensor name:target:value
 #
-# Only one target is allowed per line. Please see envstat(8).
-
+# Note that only one target is allowed per line, see envstat(8)
+# for more information.
+#
+# Example:
+#
 #acpitz0:acpitz0 temperature:critmax:80
 #acpitz0:acpitz0 temperature:critmin:10
 #acpitz1:acpitz1 temperature:critmax:90
 #acpitz1:acpitz1 temperature:critmin:15
+#
+# ========================================================
+# ADDITIONAL CONFIGURATION FOR SPECIFIC MOTHERBOARDS/CHIPS
+# ========================================================
+#
+# The following entry gives the correct values for the ASUS M2N-E:
+# using the it(4) driver:
+#
+#it0:VCORE_A:rfact:1800000
+#it0:VCORE_B:desc:+3.3V
+#it0:+3.3V:rfact:2000000
+#it0:+5V:rfact:3490000
+#it0:+12V:rfact:8500000
+#