QuickerTek Inc. has released new AirPort antenna upgrades for Appleis latest 15- and 17-inch PowerBooks, which feature built-in AirPort Extreme wireless networking. While AirPort Extreme features a much wider range than the original AirPort technology, the metal cases used in the PowerBook line often constrict the signal strength. When the new QuickerTek antennas, which sell for US$99.99, are mounted on the exterior of the cases, they remove those signal restrictions. The antennas are similar to the previous one released for the PowerBook line; QuickerTek simply updated their internal connectors to make them compatible with the latest models.