The D-Link Air DWL-122 Wireless USB WiFi Adapter is a convenient and reliable device that allows a PC to connect wirelessly to the internet. With its compact size and easy USB connectivity, this adapter is a simple solution for those looking to enhance their home networking capabilities. The 802.11b 2.4GHz frequency ensures compatibility with a wide range of devices, making it a versatile choice for various computing needs. Item is used and is missing the cover.