Trendnet TEW-424UB is a wireless USB adapter that allows you to connect your computer to a wireless network. It supports 802.11g standard which provides a maximum speed of 54Mbps. The adapter is compatible with Windows 98SE/ME/2000/XP operating systems. It features Infrastructure and Ad-Hoc modes, allowing you to connect to a wireless access point or create your own wireless network. Additionally, it supports WEP encryption for added security.