This Twig-PS/2 Adapter gives your arduino/seeeduino board a PS/2 interface that you can plug a PS/2 mouse or keyboard directly, also, the PS/2 library makes your coding the PS/2 easily. For all Grove users (especially beginners), we provide you guidance PDF documents. Please download and read through Preface - Getting Started and Introduction to Grove before your using of the product.Documents Please visit our wiki page for more info about this product. It will be appreciated ifyou can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to our forum.