In the AP system profile, whats the RF Band parameter set to? If it's "g", the AP-93 will put its radio in 2.4 mode. Any SSIDs set for "a" only won't work. If you ONLY have an "a" SSID, there won't be any enabled SSIDs, so the AP will be in Inactive mode. Make sure the AP system profile is not in use any where else before you change the RF Band parameter (if that turns out to be the issue). The AP-93 is a single radio, dual band AP. The AP-105 is dual radio.