diff --git a/src/main/drivers/serial_uart_stm32h7xx.c b/src/main/drivers/serial_uart_stm32h7xx.c
index aa87cedbfe..672a233c5b 100644
--- a/src/main/drivers/serial_uart_stm32h7xx.c
+++ b/src/main/drivers/serial_uart_stm32h7xx.c
@@ -334,6 +334,36 @@ const uartHardware_t uartHardware[UARTDEV_COUNT] = {
         .rxBufferSize = sizeof(uart8RxBuffer),
     },
 #endif
+
+#ifdef USE_UART9
+    // On H7, UART9 is implemented with LPUART1
+    {
+        .device = UARTDEV_9,
+        .reg = LPUART1,
+#ifdef USE_DMA
+        .rxDMAChannel = BDMA_REQUEST_LPUART1_RX,
+        .rxDMAResource = (dmaResource_t *)NULL, // No DMA support yet (Need BDMA support)
+        .txDMAChannel = BDMA_REQUEST_LPUART1_TX,
+        .txDMAResource = (dmaResource_t *)NULL, // No DMA support yet (Need BDMA support)
+#endif
+        .rxPins = {
+            { DEFIO_TAG_E(PA10), GPIO_AF3_LPUART },
+            { DEFIO_TAG_E(PB7),  GPIO_AF8_LPUART }
+        },
+        .txPins = {
+            { DEFIO_TAG_E(PA9),  GPIO_AF3_LPUART },
+            { DEFIO_TAG_E(PB6),  GPIO_AF8_LPUART }
+        },
+        .rcc = RCC_APB4(LPUART1),
+        .rxIrq = LPUART1_IRQn,
+        .txPriority = NVIC_PRIO_SERIALUART8_TXDMA, // Not used until DMA is supported
+        .rxPriority = NVIC_PRIO_SERIALUART8,       // Not used until DMA is supported
+        .txBuffer = uart9TxBuffer,
+        .rxBuffer = uart9RxBuffer,
+        .txBufferSize = sizeof(uart9TxBuffer),
+        .rxBufferSize = sizeof(uart9RxBuffer),
+    },
+#endif
 };
 
 // XXX Should serialUART be consolidated?
diff --git a/src/main/target/NUCLEOH743/target.h b/src/main/target/NUCLEOH743/target.h
index 3038964746..97d2d836cb 100644
--- a/src/main/target/NUCLEOH743/target.h
+++ b/src/main/target/NUCLEOH743/target.h
@@ -52,8 +52,8 @@
 #define UART2_TX_PIN            PD5
 
 #define USE_UART3
-#define UART3_RX_PIN            PD9
-#define UART3_TX_PIN            PD8
+#define UART3_RX_PIN            PD9  // ST-LINK Virtual COM Port
+#define UART3_TX_PIN            PD8  // ST-LINK Virtual COM Port
 
 #define USE_UART4
 #define UART4_RX_PIN            PC11
@@ -75,12 +75,16 @@
 #define UART8_RX_PIN            PE0
 #define UART8_TX_PIN            PE1
 
+#define USE_UART9 // LPUART1
+#define UART9_RX_PIN            PB7 // PA10 (Shared with UART1)
+#define UART9_TX_PIN            PB6 // PA9 (Shared with UART1)
+
 #define USE_VCP
 
 #define USE_SOFTSERIAL1
 #define USE_SOFTSERIAL2
 
-#define SERIAL_PORT_COUNT       11
+#define SERIAL_PORT_COUNT       12
 
 #define USE_SPI