The new AirPort Express ($99) resembles a white Apple TV. Aside from the redesign, the biggest change is the addition of dual-band 802.11n Wi-Fi. That means it can support two different frequencies within 80.2.11n.
So no matter which band your wireless devices use, they’ll automatically connect to the best available band for the fastest possible performance.
The Airport Express can serve as a Wi-Fi access point or booster, turn your speakers into an AirPlay receiver point using the audio jack or enable your printer for wireless printing by using the USB port.
The device is available on the Apple Store now.