1、It is made of high quality PCB material, strong and durable. 2、For Lenovo ThinkPad IBM, for lenovo dedicated, FRU number: 04X6087. 3、Strong compatibility, compatible for Lenovo T series/Y series/X series/W series notebooks. 4、More for thinkpad machines are compatible: (right click desktop computer - click device manager) - network device manager network card model - for Intel 7260-n network card(low match model 300M network card), can be replaced and upgraded to this card - f 5、2.4/5G dual-band WiFi with a maximum speed of 867Mbps. Features: It is made of high quality PCB material, strong and durable. For Lenovo ThinkPad IBM, for lenovo dedicated, FRU number: 04X6087. Strong compatibility, compatible for Lenovo T series/Y series/X series/W series notebooks. More for thinkpad machines are compatible: (right click desktop computer - click device manager) - network device manager network card model - for Intel 7260-n network card(low match model 300M network card), can be replaced and upgraded to this card - for intel-7260 AC.(5G-AC supports 867M) 2.4/5G dual-band WiFi with a maximum speed of 867Mbps. Specifications: Material: PCB Size: Approx. 3*2.2*0.5cm/1.18*0.87*0.20inch Model: For intel 7260AC 7260NGW Transmission rate: 867Mbps Support agreement: 802.11ac Interface Type: NGFF/M2 Working frequency: 2.4G/5G Compatible Model: For T440 T440P T440S T540P X240 X240S W540 L440 L540 NEW X1C YOGA3Y B40-30 B40-70/-80 B50-70 B50-80 Y70-70/80 Y40-70 Y50-70 Y50-80 N40-70 N50-70 Package list: 1 x Network Card Note: Display 867M is the highest power, affected by the use environment, router transmit power, actual use of the device, etc., signal fluctuation within 10 meters of short-range 5G signal, measured: fluctuation between 500M-867M is normal.