How do you know if a client device is interoperable with a Cisco wireless LAN (WLAN) infrastructure - supporting the latest WLAN standards and Cisco innovations? Look for the Cisco Compatible logo, which is earned through the Cisco Compatible Extensions program for WLAN client devices. In the program, Cisco licenses a specification with the latest WLAN standards and Cisco innovations. A program participant, such as a maker of a WLAN client adapter or client device, implements support for all features and then submits the product to an independent lab for rigorous testing. Only by passing all tests does the device earn the right to be called Cisco Compatible.