Features: 1.Only used for Lenovo laptops, compatible for Lenovo B40-30/N40-30, B40-70/N40-70/B40-45/N40-45, etc. 2.In order to help the high?speed transmission of the signal, equipped with Bluetooth 4.0, which can be connected when in use. 3.Support for Microsoft Windows 7 /Microsoft Windows 8.1/Microsoft Windows 10/Linux (most functions are not available for Linux) 4.Convenient to use and with good performance, with small size, easy to carry and store. 5.With strict quality control and quality assurance, high safety factor, can be used with peace of mind. specification:Item Type: Wireless Network Card Model: RTL8723BENF Edition Model: RTL8723BE Frequency Band: 2.4 GHz Network Standards: 802.11b, 802.11g, draft 802.11n Modulation Technology: OFDM with BPSK, QPSK, 16 QAM, 64 QAM; DBPSK, DQPSK, CCK FEC Encoding Rate: 1 / 2, 2 / 3, 3 / 4, 5/6 Hardware Encryption: AES, TKIP, WEP Quality of Service: 802.11e Peripheral Interface: GPIO, LED Memory Interface: EEPROM Supported Data Rate: IEEE 802.11a: None IEEE 802.11b: 1 to 11 Mbps IEEE 802.11g: 6 to 54 Mbps IEEE 802.11 n to 300 Mbps Wireless Type: 802.11 a / b / g / n Interface: NGFF M.2: PCI-E Bluetooth: Bluetooth 4.0 Operating System: For Microsoft Windows 7 /Microsoft Windows 8.1/Microsoft Windows 10/Linux (most functions are not available for Linux) PackageList:1 x Wireless Network Card