diff --git a/board/SConscript b/board/SConscript
index 45fa0f41..81f1ef84 100644
--- a/board/SConscript
+++ b/board/SConscript
@@ -15,4 +15,7 @@ for project_name, project in build_projects.items():
   if ("ENABLE_SPI" in os.environ or "h7" in project_name) and not project_name.startswith('pedal'):
     flags.append('-DENABLE_SPI')
 
+  if "H723" in os.environ:
+    flags.append('-DSTM32H723')
+
   build_project(project_name, project, flags)
diff --git a/board/boards/board_declarations.h b/board/boards/board_declarations.h
index b127f192..372c597f 100644
--- a/board/boards/board_declarations.h
+++ b/board/boards/board_declarations.h
@@ -57,6 +57,7 @@ struct board {
 #define HW_TYPE_RED_PANDA 7U
 #define HW_TYPE_RED_PANDA_V2 8U
 #define HW_TYPE_TRES 9U
+#define HW_TYPE_QUATRO 10U
 
 // LED colors
 #define LED_RED 0U
diff --git a/board/boards/quatro.h b/board/boards/quatro.h
new file mode 100644
index 00000000..09be4e86
--- /dev/null
+++ b/board/boards/quatro.h
@@ -0,0 +1,71 @@
+void quatro_set_led(uint8_t color, bool enabled) {
+  switch (color) {
+    case LED_RED:
+      set_gpio_output(GPIOD, 15, !enabled);
+      break;
+     case LED_GREEN:
+      set_gpio_output(GPIOD, 14, !enabled);
+      break;
+    case LED_BLUE:
+      set_gpio_output(GPIOE, 2, !enabled);
+      break;
+    default:
+      break;
+  }
+}
+
+void quatro_init(void) {
+  red_chiplet_init();
+
+  // C2: SOM GPIO used as input (fan control at boot)
+  set_gpio_mode(GPIOC, 2, MODE_INPUT);
+  set_gpio_pullup(GPIOC, 2, PULL_DOWN);
+
+  // SOM bootkick + reset lines
+  set_gpio_mode(GPIOC, 12, MODE_OUTPUT);
+  tres_set_bootkick(BOOT_BOOTKICK);
+
+  // SOM debugging UART
+  gpio_uart7_init();
+  uart_init(&uart_ring_som_debug, 115200);
+
+  // SPI init
+  gpio_spi_init();
+
+  // fan setup
+  set_gpio_alternate(GPIOC, 8, GPIO_AF2_TIM3);
+
+  // Initialize IR PWM and set to 0%
+  set_gpio_alternate(GPIOC, 9, GPIO_AF2_TIM3);
+  pwm_init(TIM3, 4);
+  tres_set_ir_power(0U);
+
+  // Clock source
+  clock_source_init();
+}
+
+const board board_quatro = {
+  .harness_config = &red_chiplet_harness_config,
+  .has_hw_gmlan = false,
+  .has_obd = true,
+  .has_spi = true,
+  .has_canfd = true,
+  .has_rtc_battery = true,
+  .fan_max_rpm = 6600U,
+  .avdd_mV = 1800U,
+  .fan_stall_recovery = false,
+  .fan_enable_cooldown_time = 3U,
+  .init = quatro_init,
+  .init_bootloader = unused_init_bootloader,
+  .enable_can_transceiver = red_chiplet_enable_can_transceiver,
+  .enable_can_transceivers = red_chiplet_enable_can_transceivers,
+  .set_led = quatro_set_led,
+  .set_can_mode = red_chiplet_set_can_mode,
+  .check_ignition = red_check_ignition,
+  .read_current = unused_read_current,
+  .set_fan_enabled = tres_set_fan_enabled,
+  .set_ir_power = tres_set_ir_power,
+  .set_siren = unused_set_siren,
+  .set_bootkick = tres_set_bootkick,
+  .read_som_gpio = tres_read_som_gpio
+};
diff --git a/board/stm32h7/board.h b/board/stm32h7/board.h
index 0394e3b5..d5f77443 100644
--- a/board/stm32h7/board.h
+++ b/board/stm32h7/board.h
@@ -17,6 +17,7 @@
 #include "boards/red.h"
 #include "boards/red_chiplet.h"
 #include "boards/tres.h"
+#include "boards/quatro.h"
 
 
 uint8_t get_board_id(void) {
@@ -38,8 +39,17 @@ void detect_board_type(void) {
   } else if (board_id == 2U) {
     hw_type = HW_TYPE_TRES;
     current_board = &board_tres;
+  } else if (board_id == 3U) {
+    hw_type = HW_TYPE_QUATRO;
+    current_board = &board_tres;
   } else {
     hw_type = HW_TYPE_UNKNOWN;
     print("Hardware type is UNKNOWN!\n");
   }
+
+  // TODO: detect this live
+#ifdef STM32H723
+  hw_type = HW_TYPE_QUATRO;
+  current_board = &board_quatro;
+#endif
 }
diff --git a/board/stm32h7/clock.h b/board/stm32h7/clock.h
index c5f93cd0..478e2aa4 100644
--- a/board/stm32h7/clock.h
+++ b/board/stm32h7/clock.h
@@ -18,9 +18,11 @@ PCLK1: 60MHz (for USART2,3,4,5,7,8)
 */
 
 void clock_init(void) {
-  //Set power mode to direct SMPS power supply(depends on the board layout)
+  // Set power mode to direct SMPS power supply(depends on the board layout)
+#ifndef STM32H723
   register_set(&(PWR->CR3), PWR_CR3_SMPSEN, 0xFU); // powered only by SMPS
-  //Set VOS level (VOS3 to 170Mhz, VOS2 to 300Mhz, VOS1 to 400Mhz, VOS0 to 550Mhz)
+#endif
+  // Set VOS level (VOS3 to 170Mhz, VOS2 to 300Mhz, VOS1 to 400Mhz, VOS0 to 550Mhz)
   register_set(&(PWR->D3CR), PWR_D3CR_VOS_1 | PWR_D3CR_VOS_0, 0xC000U); //VOS1, needed for 80Mhz CAN FD
   while ((PWR->CSR1 & PWR_CSR1_ACTVOSRDY) == 0);
   while ((PWR->CSR1 & PWR_CSR1_ACTVOS) != (PWR->D3CR & PWR_D3CR_VOS)); // check that VOS level was actually set
diff --git a/python/__init__.py b/python/__init__.py
index 50d9197a..92aaf026 100644
--- a/python/__init__.py
+++ b/python/__init__.py
@@ -166,6 +166,7 @@ class Panda:
   HW_TYPE_RED_PANDA = b'\x07'
   HW_TYPE_RED_PANDA_V2 = b'\x08'
   HW_TYPE_TRES = b'\x09'
+  HW_TYPE_QUATRO = b'\x0a'
 
   CAN_PACKET_VERSION = 4
   HEALTH_PACKET_VERSION = 15
@@ -175,15 +176,16 @@ class Panda:
 
   F2_DEVICES = [HW_TYPE_PEDAL, ]
   F4_DEVICES = [HW_TYPE_WHITE_PANDA, HW_TYPE_GREY_PANDA, HW_TYPE_BLACK_PANDA, HW_TYPE_UNO, HW_TYPE_DOS]
-  H7_DEVICES = [HW_TYPE_RED_PANDA, HW_TYPE_RED_PANDA_V2, HW_TYPE_TRES]
+  H7_DEVICES = [HW_TYPE_RED_PANDA, HW_TYPE_RED_PANDA_V2, HW_TYPE_TRES, HW_TYPE_QUATRO]
 
-  INTERNAL_DEVICES = (HW_TYPE_UNO, HW_TYPE_DOS, HW_TYPE_TRES)
-  HAS_OBD = (HW_TYPE_BLACK_PANDA, HW_TYPE_UNO, HW_TYPE_DOS, HW_TYPE_RED_PANDA, HW_TYPE_RED_PANDA_V2, HW_TYPE_TRES)
+  INTERNAL_DEVICES = (HW_TYPE_UNO, HW_TYPE_DOS, HW_TYPE_TRES, HW_TYPE_QUATRO)
+  HAS_OBD = (HW_TYPE_BLACK_PANDA, HW_TYPE_UNO, HW_TYPE_DOS, HW_TYPE_RED_PANDA, HW_TYPE_RED_PANDA_V2, HW_TYPE_TRES, HW_TYPE_QUATRO)
 
   MAX_FAN_RPMs = {
     HW_TYPE_UNO: 5100,
     HW_TYPE_DOS: 6500,
     HW_TYPE_TRES: 6600,
+    HW_TYPE_QUATRO: 6600,
   }
 
   HARNESS_STATUS_NC = 0