The NY Times writes The 54 Mbps keychain adapter from Buffalo Technology is a wireless adapter that adds Wi-Fi connectivity to PC’s and laptops, but with an extra measure of mobility.
The device, about the size of a cigarette lighter, plugs into a computer’s U.S.B. port, as do other wireless adapters of that genre, but it also includes a built-in installation feature: when plugged into a computer for the first time, it automatically installs the necessary drivers and opens a wizard to install Wi-Fi connectivity software, also known as client management software. No installation CD is needed. (full story)