Even though the D-Link AirPremier AG DI-784 has only one antenna, it provided phenomenal throughput, especially in D-Link's proprietary turbo mode. We did, however, find that the signal in this mode was less stable than in nonturbo mode. Security with this dual-mode ("a/g") router is top-notch and offers a lot of extra features, including a virtual cable tester and a special gaming mode to bypass firewall incompatibilities.

Initial Configuration and Documentation

Setting up the DI-784's access point is an intuitive process, which is made easier by the detailed step-by-step CD documentation. Client card installation is also well documented but required reinstallation in one instance, because our test laptop froze after we inserted the PC Card. Otherwise, the client utility is one of the best available: It indicates link quality, signal strength, and data rate.

Management and Features

The router's management interface is fairly polished—but counterintuitive at times. For example, the tabs and buttons of the menus' layout should be reversed. A feature unique to the DI-784 is its integrated cable-testing software, which diagnoses WAN-side networking problems, such as opens, shorts, or impedance mismatches.

Security

The DI-784 is one of the most secure routers in our roundup, including IP and MAC filtering, parental controls (with URL blocking), an SPI firewall, and WEP and WPA support.

Performance