#90: 5Ghz mode with Ralink RT2870 and AirPort Express

Solved!
I purchased a SparkLAN WUBR-505N dual band USB WiFi adapter, which claimed to do 802.11 a/b/g/n, for my Powerbook G4. This card is using the Ralink RT 2870, which is a dual band chipset with fairly nice Mac OS X drivers provided by Ralink. I plugged it in...