The Logitech USB Unifying Receiver dongle Model C-U0007 is a wireless USB receiver designed to connect a variety of Logitech devices, such as mice, trackballs, and touchpads. This black receiver is compatible with various Logitech products and offers a convenient way to connect and use them without the hassle of cords. With its reliable wireless connectivity and compact design, the Logitech USB Unifying Receiver is a versatile and practical accessory for any computer setup.