The current one can do this ... I'd be surprised if the new one couldn't. The only problem is that this new model still has a 10/100 ethernet port, so you would have slow speeds between devices that are connected on separate base stations. This to me is a deal breaker. Guess I'll have to go with a second AEBS.
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It's crippling if you want to do large file transfers between two computers with gigabit ethernet.
Put them on a gigabit switch together and the 10/100 wont slow them down.