The represents a dual-band (2.4 GHz / 5 GHz) 802.11ac Wave 1 device with theoretical peak PHY rates of up to 867 Mbps on 5 GHz (80 MHz channel, 2 spatial streams) and 300 Mbps on 2.4 GHz (40 MHz channel, 2 spatial streams). Unlike internal PCIe Wi-Fi, USB adapters rely heavily on robust host-side drivers to manage USB bus transactions, firmware uploads, and 802.11 MAC/PHY offloading.