diff --git a/Board-STM32F407-Discovery.md b/Board-STM32F407-Discovery.md
index 3a22000..ff28886 100644
--- a/Board-STM32F407-Discovery.md
+++ b/Board-STM32F407-Discovery.md
@@ -38,10 +38,10 @@ sudo apt-get install dfu-util
 * Create a udev rules file. I used ```sudo vi /etc/udev/rules.d/49-stmdiscovery.rules``` and put the following contents:
 ```
 # f055:9800 - STM32F4 Discovery running MicroPython in USB Serial Mode (CN5)
-ATTRS{idVendor}=="f055", ATTRS{idProduct}=="9800", ENV{ID_MM_DEVICE_IGNORE}="1"
-ATTRS{idVendor}=="f055", ATTRS{idProduct}=="9800", ENV{MTP_NO_PROBE}="1"
-SUBSYSTEMS=="usb", ATTRS{idVendor}=="f055", ATTRS{idProduct}=="9800", MODE:="0666"
-KERNEL=="ttyACM*", ATTRS{idVendor}=="f055", ATTRS{idProduct}=="9800", MODE:="0666"
+ATTRS{idVendor}=="f055", ENV{ID_MM_DEVICE_IGNORE}="1"
+ATTRS{idVendor}=="f055", ENV{MTP_NO_PROBE}="1"
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="f055", MODE:="0666"
+KERNEL=="ttyACM*", ATTRS{idVendor}=="f055", MODE:="0666"
 # 0483:df11 - STM32F4 Discovery in DFU mode (CN5)
 SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="df11", MODE:="0666"
 ```