The Logitech USB Unifying Receiver is a wireless receiver made by Logitech, designed for easy connectivity with USB interfaces. This 4-pack unit is ideal for those looking to expand their wireless connectivity options, providing a seamless and clutter-free setup for keyboards and mice. With a focus on English language support and a sleek design, this product is a practical choice for any computer, tablet, or networking setup. Made in China, this receiver ensures reliable performance and compatibility with various devices.