diff --git a/sys/alpha/conf/GENERIC b/sys/alpha/conf/GENERIC
index ef996ea27c5..2dfc615a5c7 100644
--- a/sys/alpha/conf/GENERIC
+++ b/sys/alpha/conf/GENERIC
@@ -139,6 +139,11 @@ device		lpt		# Printer
 device		ppi		# Parallel port interface device
 #device		vpo		# Requires scbus and da
  
+# If you've got a "dumb" serial or parallel PCI card that is
+# supported by the puc(4) glue driver, uncomment the following
+# line to enable it (connects to the sio and/or ppc drivers):
+#device         puc
+ 
 # PCI Ethernet NICs.
 device		de		# DEC/Intel DC21x4x (``Tulip'')
 device		txp		# 3Com 3cR990 (``Typhoon'')
diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC
index b62a2279b10..97e78071e00 100644
--- a/sys/amd64/conf/GENERIC
+++ b/sys/amd64/conf/GENERIC
@@ -158,6 +158,10 @@ device		plip		# TCP/IP over parallel
 device		ppi		# Parallel port interface device
 #device		vpo		# Requires scbus and da
 
+# If you've got a "dumb" serial or parallel PCI card that is
+# supported by the puc(4) glue driver, uncomment the following
+# line to enable it (connects to the sio and/or ppc drivers):
+#device         puc
 
 # PCI Ethernet NICs.
 device		de		# DEC/Intel DC21x4x (``Tulip'')
diff --git a/sys/i386/conf/GENERIC b/sys/i386/conf/GENERIC
index 122066acaf0..0dc7924b724 100644
--- a/sys/i386/conf/GENERIC
+++ b/sys/i386/conf/GENERIC
@@ -177,6 +177,10 @@ device		plip		# TCP/IP over parallel
 device		ppi		# Parallel port interface device
 #device		vpo		# Requires scbus and da
 
+# If you've got a "dumb" serial or parallel PCI card that is
+# supported by the puc(4) glue driver, uncomment the following
+# line to enable it (connects to the sio and/or ppc drivers):
+#device         puc
 
 # PCI Ethernet NICs.
 device		de		# DEC/Intel DC21x4x (``Tulip'')