The NEW SEALED D-Link Range Booster N USB Adapter DWA-140 N300 Rangebooster is a black USB adapter designed to boost the range and strength of your WiFi connection. With a maximum wireless data rate of 300 Mbps, this adapter is ideal for improving connectivity on your PC. The DWA-140 N300 model by D-Link offers reliable performance and easy setup through its USB 2.0 port connectivity. Made in China, this unit is a convenient solution for enhancing your home networking and connectivity experience.