can I install an extra router when using an airport?
I have an airport installed downstairs in my house but the signal keeps dropping in some part upstairs. Can I instal an extra router upstairs or another airport?
Airport-OTHER
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Correct. You can connect another AirPort Express, AirPort Extreme or Time Capsule to extend the network from the actual AirPort station. See > http://support.apple.com/kb/HT4145?viewlocale=en_US&locale=en_US