The ASUS PCE-AC55BT B1 PCIe Wi-Fi adapter provides superior dual-band AC1200 Wi-Fi performance for server backbone and switching infrastructure applications, it delivers wide compatibility, fitting any x1, x2, x8, or x16 slot. With 80MHz bandwidth and higher modulation scheme, PCE-AC55BT speeds up to 867Mbps on the 5 GHz band that’s 3 times faster than standard 802.11n Wi-Fi , allowing you enjoying faster and more stable connections. Besides, high-speed design and powerful antenna ensures long range wireless coverage. The PCE-AC55BT B1 is an 802.11ac dual-band 2x2 PCIe Wi-Fi adapter with speeds up to 867Mbps on the 5 GHz band that’s 3 times faster than standard 802.11n Wi-Fi. It also includes a dual mode Bluetooth 4.2 and can connect to the latest BLE product.