With the D-Link AC1200 Wi-Fi PCI Express Adapter (DWA-582) you can upgrade your Desktop PC to add the latest generation wireless AC technology. Designed with high-gain external antennas and dual Band technology (Both 2.4GHz and 5GHz) the DWA-582 provides performance Up to 4 times faster than previous-generation wireless N, meaning that you can stream HD movies, transfer large files, and enjoy lag-free gaming from more places throughout your home or office. The D-Link AC1200 Wi-Fi PCI Express Adapter is backward compatible to existing Wi-Fi networks and provides an optimal experience with an AC1200 Wi-Fi router.