diff --git a/_data/boards/STM32F401RCT6-STM32F-Core-Board.json b/_data/boards/STM32F401RCT6-STM32F-Core-Board.json
index 52c4cad..8b4a120 100644
--- a/_data/boards/STM32F401RCT6-STM32F-Core-Board.json
+++ b/_data/boards/STM32F401RCT6-STM32F-Core-Board.json
@@ -38,7 +38,8 @@
         "mounting": "None"
     },
     "remarks": [
-        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." }
+        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." },
+        { "type": "warning", "content": "The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional switchable pull-up resistor on D+ (R11, controlled by PD2), which is disabled by default. This resistor is not needed and violates the USB specification when used at the same time as the internal pull-up resistors. This may cause errors while using USB on this board." }
     ],
     "resources": [
         {
diff --git a/_data/boards/STM32F407VET6-Euse-M4-DEMO-Medium.json b/_data/boards/STM32F407VET6-Euse-M4-DEMO-Medium.json
index 260ec05..c461c18 100644
--- a/_data/boards/STM32F407VET6-Euse-M4-DEMO-Medium.json
+++ b/_data/boards/STM32F407VET6-Euse-M4-DEMO-Medium.json
@@ -41,7 +41,8 @@
         "mounting": "4x mounting hole (M2)"
     },
     "remarks": [
-        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." }
+        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." },
+        { "type": "warning", "content": "The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional pull-up resistor on D+. This resistor is not needed and violates the USB specification when the internal pull-up resistors are also used. This may cause errors while using USB on this board." }
     ],
     "resources": [
         {
diff --git a/_data/boards/STM32F407VET6-STM32-F4VE-V2.0.json b/_data/boards/STM32F407VET6-STM32-F4VE-V2.0.json
index 6c30c0b..c8aefc6 100644
--- a/_data/boards/STM32F407VET6-STM32-F4VE-V2.0.json
+++ b/_data/boards/STM32F407VET6-STM32-F4VE-V2.0.json
@@ -38,7 +38,8 @@
         "mounting": "4x mounting hole (M3)"
     },
     "remarks": [
-        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." }
+        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." },
+        { "type": "warning", "content": "The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional pull-up resistor on D+ (R21). This resistor is not needed and violates the USB specification when the internal pull-up resistors are also used. This may cause errors while using USB on this board." }
     ],
     "resources": [
         {
diff --git a/_data/boards/STM32F407VET6-VCC-GND-Small.json b/_data/boards/STM32F407VET6-VCC-GND-Small.json
index d6c99a4..a205848 100644
--- a/_data/boards/STM32F407VET6-VCC-GND-Small.json
+++ b/_data/boards/STM32F407VET6-VCC-GND-Small.json
@@ -38,7 +38,8 @@
         "mounting": "None"
     },
     "remarks": [
-        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." }
+        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." },
+        { "type": "warning", "content": "The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional pull-up resistor on D+ (R21). This resistors is not needed and violates the USB specification when the internal pull-up resistors are also used. This may cause errors while using USB on this board." }
     ],
     "resources": [
         {
diff --git a/_data/boards/STM32F407VGT6-SR-Board.json b/_data/boards/STM32F407VGT6-SR-Board.json
index d612ffc..d4a760c 100644
--- a/_data/boards/STM32F407VGT6-SR-Board.json
+++ b/_data/boards/STM32F407VGT6-SR-Board.json
@@ -35,7 +35,8 @@
         "mounting": "None"
     },
     "remarks": [
-        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." }
+        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." },
+        { "type": "warning", "content": "The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional pull-up resistor on D+ (R8). This resistor is not needed and violates the USB specification when the internal pull-up resistors are also used. This may cause errors while using USB on this board." }
     ],
     "resources": [
         {
diff --git a/_data/boards/STM32F407ZGT6-STM32F-Core-Board.json b/_data/boards/STM32F407ZGT6-STM32F-Core-Board.json
index 4ee0c75..92d0b4f 100644
--- a/_data/boards/STM32F407ZGT6-STM32F-Core-Board.json
+++ b/_data/boards/STM32F407ZGT6-STM32F-Core-Board.json
@@ -38,7 +38,8 @@
         "mounting": "None"
     },
     "remarks": [
-        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." }
+        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." },
+        { "type": "warning", "content": "The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional switchable pull-up resistor on D+ (R14, controlled by PA8), which is disabled by default. This resistor is not needed and violates the USB specification when used at the same time as the internal pull-up resistors. This may cause errors while using USB on this board." }
     ],
     "resources": [
         {
diff --git a/_data/boards/STM32F407ZGT6-VCC-GND-Large.json b/_data/boards/STM32F407ZGT6-VCC-GND-Large.json
index 5265733..016ea51 100644
--- a/_data/boards/STM32F407ZGT6-VCC-GND-Large.json
+++ b/_data/boards/STM32F407ZGT6-VCC-GND-Large.json
@@ -38,7 +38,8 @@
         "mounting": "None"
     },
     "remarks": [
-        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." }
+        { "type": "warning", "content": "The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time." },
+        { "type": "warning", "content": "The microcontroller on this board features internal pull-up resistors for the USB data lines. However, this board has an additional pull-up resistor on D+ (R8). This resistor is not needed and violates the USB specification when the internal pull-up resistors are also used. This may cause errors while using USB on this board." }
     ],
     "resources": [
         {