 Hi, this is Nicholas from ST Microelectronics. This video is addressed to people new to ST Microelectronics and to our STM32 microcontrollers. In this video, I will present you our STM32 expansion boards, also known as XNucleo boards. What are the STM32 expansion boards, also known as XNucleo? The STM32 expansion boards carry all the required components to evaluate ST devices like sensors, power, analog and other devices to be used together with a STM32 microcontroller. These expansion boards help to build STM32-based applications leveraging functionality and performance of ST devices portfolio. They are equipped with standardized interconnections such as the Arduino Uno R3 connector as shown here or a Morpho connector for a higher level of connectivity. This is shown here. The STM32 expansion boards, also known as XNucleo, plug directly into the STM32 Nucleo boards. They are supported by STM32 cube expansion packages. Here is an example to show you how you can connect your XNucleo boards into a STM32 Nucleo board. As you can see, we can stack multiple XNucleo boards into one STM32 Nucleo board. Note that the combination of STM32 Nucleo board and some XNucleo boards make what we call a PNucleo. Where can you find our STM32 expansion boards? Very easy, on our website at ST.com. Make a search in the search menu for STM32 expansion boards. This will bring you to this page. Now click on Product Selector here. This will display all our XNucleos and PNucleos available that you can order directly from our website. Let me show you some of the XNucleos and PNucleos available on our website. As you can see here, I'm scrolling down on our website at ST.com showing you some of the XNucleos and PNucleos that are currently available. We have all types of ST devices represented or used here from sensors to power to NFC and others. Now that you know the basics about the STM32 expansion boards I invite you to explore our different XNucleos and PNucleos in order to add connectivity, sensing, power and more to your application. Thank you very much for watching.