diff --git a/util/superiotool/ali.c b/util/superiotool/ali.c
index 0bc1e06..9111fa2 100644
--- a/util/superiotool/ali.c
+++ b/util/superiotool/ali.c
@@ -95,7 +95,7 @@
 	       get_superio_name(reg_table, id), id, rev, port);
 	chip_found = 1;
 
-	dump_superio("ALi", reg_table, port, id);
+	dump_superio("ALi", reg_table, port, id, LDN_SEL);
 
 	exit_conf_mode_ali(port);
 }
diff --git a/util/superiotool/fintek.c b/util/superiotool/fintek.c
index d4c9bb5..701bd4c 100644
--- a/util/superiotool/fintek.c
+++ b/util/superiotool/fintek.c
@@ -137,7 +137,7 @@
 	       get_superio_name(reg_table, did), vid, did, port);
 	chip_found = 1;
 
-	dump_superio("Fintek", reg_table, port, did);
+	dump_superio("Fintek", reg_table, port, did, LDN_SEL);
 
 	exit_conf_mode_winbond_fintek_ite_8787(port);
 }
diff --git a/util/superiotool/ite.c b/util/superiotool/ite.c
index 8ecefb5..c784318 100644
--- a/util/superiotool/ite.c
+++ b/util/superiotool/ite.c
@@ -534,10 +534,10 @@
 	       get_superio_name(reg_table, id), id, chipver, port);
 	chip_found = 1;
 
-	dump_superio("ITE", reg_table, port, id);
+	dump_superio("ITE", reg_table, port, id, LDN_SEL);
 
 	if (extra_dump) {
-		regwrite(port, 0x07, 0x04); /* Select LDN 4 (EC). */
+		regwrite(port, LDN_SEL, 0x04); /* Select LDN 4 (EC). */
 
 		/* Get EC base address (stored in LDN 4, index 0x60/0x61). */
 		ecport = regval(port, 0x60) << 8;
@@ -547,7 +547,7 @@
 		ecport += 5;
 
 		printf("Environment controller (0x%04x)\n", ecport);
-		dump_superio("ITE-EC", ec_table, ecport, id);
+		dump_superio("ITE-EC", ec_table, ecport, id, LDN_SEL);
 	}
 }
 
@@ -583,5 +583,5 @@
 void print_ite_chips(void)
 {
 	print_vendor_chips("ITE", reg_table);
-	print_vendor_chips("ITE EC", ec_table);
+	print_vendor_chips("ITE-EC", ec_table);
 }
diff --git a/util/superiotool/nsc.c b/util/superiotool/nsc.c
index 3a3336a..991bdc8 100644
--- a/util/superiotool/nsc.c
+++ b/util/superiotool/nsc.c
@@ -506,7 +506,7 @@
 	       get_superio_name(reg_table, id), id, rev, port);
 	chip_found = 1;
 
-	dump_superio("NSC", reg_table, port, id);
+	dump_superio("NSC", reg_table, port, id, LDN_SEL);
 }
 
 void print_nsc_chips(void)
diff --git a/util/superiotool/smsc.c b/util/superiotool/smsc.c
index ae141ea..bf23188 100644
--- a/util/superiotool/smsc.c
+++ b/util/superiotool/smsc.c
@@ -643,7 +643,8 @@
 	       id, rev, port);
 	chip_found = 1;
 
-	dump_superio((id == 0x77 ? "ASUS" : "SMSC"), reg_table, port, id);
+	dump_superio((id == 0x77 ? "ASUS" : "SMSC"), reg_table, port, id,
+		     LDN_SEL);
 
 	exit_conf_mode_smsc(port);
 }
diff --git a/util/superiotool/superiotool.c b/util/superiotool/superiotool.c
index 1bbe5fe..9d3840f 100644
--- a/util/superiotool/superiotool.c
+++ b/util/superiotool/superiotool.c
@@ -82,7 +82,7 @@
 }
 
 static void dump_regs(const struct superio_registers reg_table[],
-		      int i, int j, uint16_t port)
+		      int i, int j, uint16_t port, uint8_t ldn_sel)
 {
 	int k;
 	const int16_t *idx;
@@ -91,7 +91,7 @@
 		printf("LDN 0x%02x", reg_table[i].ldn[j].ldn);
 		if (reg_table[i].ldn[j].name != NULL)
 			printf(" (%s)", reg_table[i].ldn[j].name);
-		regwrite(port, 0x07, reg_table[i].ldn[j].ldn);
+		regwrite(port, ldn_sel, reg_table[i].ldn[j].ldn);
 	} else {
 		printf("Register dump:");
 	}
@@ -131,7 +131,7 @@
 
 void dump_superio(const char *vendor,
 		  const struct superio_registers reg_table[],
-		  uint16_t port, uint16_t id)
+		  uint16_t port, uint16_t id, uint8_t ldn_sel)
 {
 	int i, j, no_dump_available = 1;
 
@@ -149,7 +149,7 @@
 			if (reg_table[i].ldn[j].ldn == EOT)
 				break;
 			no_dump_available = 0;
-			dump_regs(reg_table, i, j, port);
+			dump_regs(reg_table, i, j, port, ldn_sel);
 		}
 
 		if (no_dump_available)
diff --git a/util/superiotool/superiotool.h b/util/superiotool/superiotool.h
index 7e0ca0b..e26f21c 100644
--- a/util/superiotool/superiotool.h
+++ b/util/superiotool/superiotool.h
@@ -73,10 +73,14 @@
 #define MISC		-5		/* Needs special comment in output */
 #define MAXLDN		0x14		/* Biggest LDN */
 #define LDNSIZE		(MAXLDN + 3)	/* Biggest LDN + 0 + NOLDN + EOT */
-#define MAXNUMIDX	170		/* Maximum number of indexes */
+#define MAXNUMIDX	170		/* Maximum number of indices */
 #define IDXSIZE 	(MAXNUMIDX + 1)
 #define MAXNUMPORTS	(6 + 1)		/* Maximum number of Super I/O ports */
 
+/* Select registers for various components. */
+#define LDN_SEL		0x07		/* LDN select register */
+#define WINBOND_HWM_SEL	0x4e		/* Hardware monitor bank select */
+
 /* Command line parameters. */
 extern int dump, verbose, extra_dump;
 
@@ -102,7 +106,7 @@
 const char *get_superio_name(const struct superio_registers reg_table[],
 			     uint16_t id);
 void dump_superio(const char *name, const struct superio_registers reg_table[],
-		  uint16_t port, uint16_t id);
+		  uint16_t port, uint16_t id, uint8_t ldn_sel);
 void probing_for(const char *vendor, const char *info, uint16_t port);
 void print_vendor_chips(const char *vendor,
 			const struct superio_registers reg_table[]);
diff --git a/util/superiotool/winbond.c b/util/superiotool/winbond.c
index 91f0606..d5d9275 100644
--- a/util/superiotool/winbond.c
+++ b/util/superiotool/winbond.c
@@ -468,6 +468,55 @@
 	{EOT}
 };
 
+static const struct superio_registers hwm_table[] = {
+	{0x828, "W83627THF/THG", {
+		{NOLDN, NULL,
+			{0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
+			 0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x10,0x11,0x12,0x13,
+			 0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,
+			 0x1e,0x1f,
+			 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,
+			 0x2b,0x2c,0x2d,0x2e,0x2f,0x30,0x31,0x32,0x33,0x34,
+			 0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,
+			 0x3f,
+			 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,
+			 0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,EOT},
+			{RSVD,0xff,RSVD,0xff,0x00,0x00,0x00,0x00,0x01,0x01,
+			 0x01,0x01,0x3c,0x3c,0x0a,0x0a,RSVD,0xff,0x00,0x00,
+			 0x00,0x01,0x01,0x3c,0x43,RSVD,0xff,0xff,RSVD,RSVD,
+			 NANA,NANA,
+			 NANA,NANA,NANA,NANA,NANA,RSVD,RSVD,NANA,NANA,NANA,
+			 NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,NANA,
+			 RSVD,RSVD,RSVD,RSVD,NANA,NANA,NANA,NANA,NANA,RSVD,
+			 RSVD,
+			 0x03,0x00,0x00,0xfe,0xff,RSVD,RSVD,0x5f,NANA,0x03,
+			 RSVD,0x44,0x18,0x15,0x80,0x5c,EOT}},
+		{0x0, "Bank 0",
+			{0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,
+			 0x5d,0x5e,0x5f,EOT},
+			{NANA,NANA,NANA,NANA,NANA,NANA,0x00,0x80,0x90,0x70,
+			 0x00,RSVD,RSVD,EOT}},
+		{0x1, "Bank 1",
+			{0x50,0x51,0x52,0x53,0x54,0x55,0x56,EOT},
+			{NANA,NANA,0x00,0x4b,0x00,0x50,0x00,EOT}},
+		{0x2, "Bank 2",
+			{0x50,0x51,0x52,0x53,0x54,0x55,0x56,EOT},
+			{NANA,NANA,0x00,0x4b,0x00,0x50,0x00,EOT}},
+		{0x4, "Bank 4",
+			{0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x59,0x5a,
+			 0x5b,EOT},
+			{0x00,0xff,RSVD,0x00,0x00,0x00,0x00,0x00,0x00,
+			 0x00,EOT}},
+		{0x5, "Bank 5",
+			{0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,EOT},
+			{NANA,NANA,RSVD,RSVD,NANA,NANA,NANA,NANA,EOT}},
+		{0x6, "Bank 6",
+			{0x50,EOT},
+			{RSVD,EOT}},
+		{EOT}}},
+	{EOT}
+};
+
 static void enter_conf_mode_winbond_88(uint16_t port)
 {
 	OUTB(0x88, port);
@@ -486,7 +535,7 @@
 
 static void probe_idregs_winbond_helper(const char *init, uint16_t port)
 {
-	uint16_t id;
+	uint16_t id, hwmport;
 	uint8_t devid, rev, olddevid;
 
 	probing_for("Winbond", init, port);
@@ -522,7 +571,27 @@
 		       get_superio_name(reg_table, id), devid, rev, port);
 	chip_found = 1;
 
-	dump_superio("Winbond", reg_table, port, id);
+	dump_superio("Winbond", reg_table, port, id, LDN_SEL);
+
+	if (extra_dump) {
+		regwrite(port, LDN_SEL, 0x0b); /* Select LDN 0xb (HWM). */
+
+		if ((regval(port, 0x30) & (1 << 0)) != (1 << 0)) {
+			printf("Hardware Monitor disabled or does not exist.\n");
+			return;
+		}
+
+		/* Get HWM base address (stored in LDN 0xb, index 0x60/0x61). */
+		hwmport = regval(port, 0x60) << 8;
+		hwmport |= regval(port, 0x61);
+
+		/* HWM address register = HWM base address + 5. */
+		hwmport += 5;
+
+		printf("Hardware monitor (0x%04x)\n", hwmport);
+		dump_superio("Winbond-HWM", hwm_table, hwmport, id,
+			     WINBOND_HWM_SEL);
+	}
 }
 
 void probe_idregs_winbond(uint16_t port)
@@ -547,4 +616,5 @@
 void print_winbond_chips(void)
 {
 	print_vendor_chips("Winbond", reg_table);
+	print_vendor_chips("Winbond-HWM", hwm_table);
 }