diff --git a/board_enable.c b/board_enable.c
index 4d4f719..b094e9b 100644
--- a/board_enable.c
+++ b/board_enable.c
@@ -636,10 +636,10 @@
 
 /**
  * Suited for:
- *   - Biostar P4M80-M4: Intel P4 + VIA P4M800 + VT8237
- *   - GIGABYTE GA-7VT600: AMD K7 + VIA KT600 + VT8237
+ *   - Biostar P4M80-M4: VIA P4M800 + VT8237 + IT8705AF
+ *   - GIGABYTE GA-7VT600: VIA KT600 + VT8237 + IT8705
  */
-static int board_biostar_p4m80_m4(const char *name)
+static int it8705_rom_write_enable(const char *name)
 {
 	/* enter IT87xx conf mode */
 	enter_conf_mode_ite(0x2e);
@@ -659,6 +659,24 @@
 }
 
 /**
+ * Suited for A-Open vKM400 AM-S: VIA KM400 + VT8237 + IT8705F.
+ */
+static int board_aopen_vkm400(const char *name)
+{
+	struct pci_dev *dev;
+
+	dev = pci_dev_find(0x1106, 0x3227);	/* VT8237 ISA bridge */
+	if (!dev) {
+		fprintf(stderr, "\nERROR: VT8237 ISA bridge not found.\n");
+		return -1;
+	}
+
+	vt823x_set_all_writes_to_lpc(dev);
+
+	return it8705_rom_write_enable(name);
+}
+
+/**
  * Winbond W83697HF Super I/O + VIA VT8235 southbridge
  *
  * Suited for:
@@ -896,18 +914,19 @@
 	{0x8086, 0x1130,      0,      0,  0x105a, 0x0d30, 0x105a, 0x4d33, "acorp",      "6a815epd",    "Acorp",       "6A815EPD",           board_acorp_6a815epd},
 	{0x1022, 0x746B, 0x1022, 0x36C0,       0,      0,      0,      0, "AGAMI",      "ARUMA",       "agami",       "Aruma",              w83627hf_gpio24_raise_2e},
 	{0x1106, 0x3177, 0x17F2, 0x3177,  0x1106, 0x3148, 0x17F2, 0x3148, NULL,         NULL,          "Albatron",    "PM266A*",            board_epox_ep_8k5a2},
+	{0x1106, 0x3205, 0x1106, 0x3205,  0x10EC, 0x8139, 0xA0A0, 0x0477, NULL,         NULL,          "AOpen",       "vKM400 AM-s",        board_aopen_vkm400},
 	{0x1022, 0x2090,      0,      0,  0x1022, 0x2080,      0,      0, "artecgroup", "dbe61",       "Artec Group", "DBE61",              board_artecgroup_dbe6x},
 	{0x1022, 0x2090,      0,      0,  0x1022, 0x2080,      0,      0, "artecgroup", "dbe62",       "Artec Group", "DBE62",              board_artecgroup_dbe6x},
 	{0x1106, 0x3189, 0x1043, 0x807F,  0x1106, 0x3177, 0x1043, 0x808C, NULL,         NULL,          "ASUS",        "A7V8X",              board_asus_a7v8x},
 	{0x1106, 0x3177, 0x1043, 0x80A1,  0x1106, 0x3205, 0x1043, 0x8118, NULL,         NULL,          "ASUS",        "A7V8X-MX SE",        board_asus_a7v8x_mx},
 	{0x8086, 0x1a30, 0x1043, 0x8070,  0x8086, 0x244b, 0x1043, 0x8028, NULL,         NULL,          "ASUS",        "P4B266",             ich2_gpio22_raise},
 	{0x10B9, 0x1541,      0,      0,  0x10B9, 0x1533,      0,      0, "asus",       "p5a",         "ASUS",        "P5A",                board_asus_p5a},
-	{0x1106, 0x3149, 0x1565, 0x3206,  0x1106, 0x3344, 0x1565, 0x1202, NULL,         NULL,          "Biostar",     "P4M80-M4",           board_biostar_p4m80_m4},
+	{0x1106, 0x3149, 0x1565, 0x3206,  0x1106, 0x3344, 0x1565, 0x1202, NULL,         NULL,          "Biostar",     "P4M80-M4",           it8705_rom_write_enable},
 	{0x1106, 0x3038, 0x1019, 0x0996,  0x1106, 0x3177, 0x1019, 0x0996, NULL,         NULL,          "Elitegroup",  "K7VTA3",             it8705f_write_enable_2e},
 	{0x1106, 0x3177, 0x1106, 0x3177,  0x1106, 0x3059, 0x1695, 0x3005, NULL,         NULL,          "EPoX",        "EP-8K5A2",           board_epox_ep_8k5a2},
 	{0x8086, 0x7110,      0,      0,  0x8086, 0x7190,      0,      0, "epox",       "ep-bx3",      "EPoX",        "EP-BX3",             board_epox_ep_bx3},
 	{0x1039, 0x0761,      0,      0,       0,      0,      0,      0, "gigabyte",   "2761gxdk",    "GIGABYTE",    "GA-2761GXDK",        it87xx_probe_spi_flash},
-	{0x1106, 0x3227, 0x1458, 0x5001,  0x10ec, 0x8139, 0x1458, 0xe000, NULL,         NULL,          "GIGABYTE",    "GA-7VT600",          board_biostar_p4m80_m4},
+	{0x1106, 0x3227, 0x1458, 0x5001,  0x10ec, 0x8139, 0x1458, 0xe000, NULL,         NULL,          "GIGABYTE",    "GA-7VT600",          it8705_rom_write_enable},
 	{0x10DE, 0x0050, 0x1458, 0x0C11,  0x10DE, 0x005e, 0x1458, 0x5000, NULL,         NULL,          "GIGABYTE",    "GA-K8N-SLI",         board_ga_k8n_sli},
 	{0x10de, 0x0360,      0,      0,       0,      0,      0,      0, "gigabyte",   "m57sli",      "GIGABYTE",    "GA-M57SLI-S4",       it87xx_probe_spi_flash},
 	{0x10de, 0x03e0,      0,      0,       0,      0,      0,      0, "gigabyte",   "m61p",        "GIGABYTE",    "GA-M61P-S3",         it87xx_probe_spi_flash},