The D-Link Range Booster USB Adapter DWA140 N300 is a new sealed device that provides a maximum wireless data rate of 300 Mbps. This dual-band adapter is designed to fit a PC and offers USB connectivity with a USB 2.0 port. The multicolor adapter is manufactured in China and is ideal for improving wireless network coverage and signal strength in your home or office. By using this USB adapter, you can easily expand your network's range and enhance your connectivity experience.