Features: 1.Supported Operating System: The wireless network card only supports for Windows 7 8 10 32 and 64 bits (for Windows XP is not supported). 2.Dual Band: Supports 2.4GHz or 5GHz dual band, dual mode BT 4.0 can be connected to low power BT products, such as earphones, keyboards, etc. 3.Large Data Capacity: With high performance, stable signal, and large data capacity, it can support more devices to transmit more data at the same time. 4.Easy Installation Removal: Using sophisticated production technology, installation and disassembly are simple and convenient. 5.Applicable Model: Suitable for Thinkpad T440 T440S T440P T540 X230S X240 X240S L440 W540 L540 new x1 carbon. specification:Item Type: Wireless Card Material: PCB Model: For Inter7260 NGW IEEE WLAN Standard: IEEE 802.11a b g n AC (2.4Ghz + 5GHZ) Speed: Up to 867Mbps Connector Interface: NGFF BT: BT 4.0 Scope of Application: Suitable for Thinkpad T440 T440S T440P T540 X230S X240 X240S L440 W540 L540, Suitable for Thinkpad New x1 Carbon Support System: For Windows 7 8 10 PackageList:1 x Wireless Card NoteDo not use for semi mini PCIE interface, only for NGFF interface, speed (maximum): 867Mbps