We recently purchased a few Latitude 6430u laptops for our customer using AP 121 access points and have been unable to obtain connection to the gateway using these devices. Windows states "limited connection" and when looking at network details there is no gateway resolved and we are unable to ping the gateway or any other network resource for that matter. All other devices we've connected to the AP 121 work fine and all other routers and APs allow the Latitude 6430u to connect. We've isolated the problem is connecting the Dell Wireless 1504 card in the Latitude's to the AP 121's. Has anyone else experienced this or have a possible resolution to this problem?