Pretty basic - I ordered a refurb Airport Express. I followed directions, plugging in the (already plugged in) modem to the Airport via an ethernet cable, then plugged the AE into the wall. It flashes green once and then ... nothing. I let it sit in the outlet for a while, thinking it would take a minute, but it didn't. I pushed the reset button for 30 seconds, still nothing. I tried a different outlet, a different ethernet cord, etc. Did I just get a lemon? Thanks in advance for your advice!