diff --git a/util/superiotool/README b/util/superiotool/README
index c971e7f..68fad30 100644
--- a/util/superiotool/README
+++ b/util/superiotool/README
@@ -30,9 +30,9 @@
 Usage
 -----
 
- $ superiotool [-d] [-D] [-V] [-v] [-h]
+ $ superiotool [-d] [-V] [-v] [-h]
 
- -d | --dump            Dump Super I/O registers
+ -d | --dump            Dump Super I/O register contents
  -V | --verbose         Verbose mode
  -v | --version         Show the superiotool version
  -h | --help            Show a short help text
diff --git a/util/superiotool/ali.c b/util/superiotool/ali.c
index 56e086f..2d0e71d 100644
--- a/util/superiotool/ali.c
+++ b/util/superiotool/ali.c
@@ -53,6 +53,8 @@
 			{0x30,0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,EOT},
 			{0x00,0x35,0x14,0x11,0x71,RSVD,0x05,EOT}},
 		{EOT}}},
+	{0x2351, "M512x", {
+		{EOT}}},
 	{EOT}
 };
 
@@ -78,6 +80,8 @@
 
 	id = regval(port, DEVICE_ID_BYTE1_REG) << 8;
 	id |= regval(port, DEVICE_ID_BYTE2_REG);
+
+	/* TODO: Not documented/available on M512x (?) */
 	rev = regval(port, DEVICE_REV_REG);
 
 	if (superio_unknown(reg_table, id)) {
diff --git a/util/superiotool/smsc.c b/util/superiotool/smsc.c
index 8c2a8c9..ee62d6b 100644
--- a/util/superiotool/smsc.c
+++ b/util/superiotool/smsc.c
@@ -28,10 +28,19 @@
 
 static const struct superio_registers reg_table[] = {
 	/* The following Super I/Os use the 0x20/0x21 ID registers. */
+	{0x03, "FDC37C93xFR", {
+		/* FIXME: There's another 0x03 but found on port 0x0d/0x0e! */
+		{EOT}}},
+	{0x0a, "FDC37N971", {
+		{EOT}}},
+	{0x0b, "FDC37N972", {
+		{EOT}}},
 	{0x0e, "LPC47N252", {	/* From sensors-detect */
 		{EOT}}},
 	{0x14, "LPC47M172", {
 		{EOT}}},
+	{0x30, "FDC37C93xAPM", {
+		{EOT}}},
 	{0x40, "FDC37C67x", {	/* E.g. FDC37C672. Chiprev: 0x01 */
 		{EOT}}},
 	{0x42, "FDC37B80x/FDC37M707", {
@@ -79,6 +88,8 @@
 			{0x30,0x60,0x61,0x70,0xf0,EOT},
 			{0x00,0x00,0x00,NANA,NANA,EOT}},
 		{EOT}}},
+	{0x43, "FDC37B77x", {
+		{EOT}}},
 	{0x44, "FDC37B78x", {
 		{NOLDN, NULL,
 			{0x03,0x07,0x20,0x21,0x22,0x23,0x24,0x26,0x27,0x28,
@@ -337,10 +348,14 @@
 	{0x03, "FDC37C669", {
 		/* Init: 0x55, 0x55. Exit: 0xaa. Ports: 0x3f0/0x370. */
 		/* Chiprev: 0x02. */
+		/* FIXME: There's another 0x03 but found on port 0x20/0x21! */
 		{EOT}}},
 	{0x04, "FDC37C669FR", {	/* TODO: Not yet in sensors-detect. */
 		/* Init: 0x55, 0x55. Exit: 0xaa. Ports: 0x3f0/0x370. */
 		{EOT}}},
+	{0x13, "LPC47N237", {
+		/* Init: 0x55. Exit: 0xaa. Ports: 0x2e/0x4e. */
+		{EOT}}},
 	{0x28, "FDC37N769", {
 		/* Init: 0x55. Exit: 0xaa. Ports: 0x3f0/0x370. */
 		{NOLDN, NULL,
@@ -355,6 +370,9 @@
 			 0x80,0x00,0x3c,RSVD,RSVD,0x00,0x00,0x00,0x00,0x00,
 			 0x00,0x00,RSVD,0x00,0x00,0x03,0x00,0x00,EOT}},
 		{EOT}}},
+	{0x29, "FDC37N3869/FDC37N869", {
+		/* Init: 0x55. Exit: 0xaa. Ports: 0x3f0/0x370. */
+		{EOT}}},
 	{0x5a, "LPC47N227", {
 		/* Init: 0x55. Exit: 0xaa. Ports: 0x2e/0x4e. */
 		{NOLDN, NULL,
diff --git a/util/superiotool/superiotool.8 b/util/superiotool/superiotool.8
index 17066bf..64828e8 100644
--- a/util/superiotool/superiotool.8
+++ b/util/superiotool/superiotool.8
@@ -74,7 +74,7 @@
 .TP
 .B "\-V, \-\-verbose"
 Enable verbose mode. This option can be used together with the
-.BR "\-d" " or " "\-D" " option (or both)."
+.BR "\-d" " option."
 .sp
 The verbose output will not only list for which type of Super I/O the tool
 is scanning, but also at which configuration port it's probing, and which
diff --git a/util/superiotool/superiotool.h b/util/superiotool/superiotool.h
index 97daed9..ec0a559 100644
--- a/util/superiotool/superiotool.h
+++ b/util/superiotool/superiotool.h
@@ -30,7 +30,7 @@
 #include <sys/io.h>
 
 #define USAGE "Usage: superiotool [-d] [-V] [-v] [-h]\n\n\
-  -d | --dump            Dump Super I/O registers\n\
+  -d | --dump            Dump Super I/O register contents\n\
   -V | --verbose         Verbose mode\n\
   -v | --version         Show the superiotool version\n\
   -h | --help            Show a short help text\n\n\