Interface: PCI Express, Dimensions ( W x D x H ): 4.8 x 4.5 x 0.85 in (120.8*115.2*21.5 mm), Antenna Type: 2 Dual Band Detachable Antennas, Wireless Standards: IEEE 802.11ac/n/a 5 GHz; IEEE 802.11n/g/b 2.4 GHz, Signal Rate: 5 GHz; 2.4 GHz, Transmit Power: 5 GHz : 24 dBm(FCC) / 23dBm(CE) (EIRP); 2.4 GHz : 25 dBm(FCC) / 20dBm(CE) (EIRP), Wireless Modes: Infrastructure mode, Certification: CE, FCC, RoHS, Package Contents: AC1200 Wireless Dual Band PCI Express Adapter Archer T4E; Low-Profile Bracket; Quick Installation Guide; Resource CD.