Features 1.Special for Lenovo /ThinkPad, two FRU No.: 04X6007 /00JT547, delivered randomly. 2.Compatible machine: for Tinkpad: T440 /T440S /T440P /X230S /X240 /X240S /L440 /W540, etc. 3.Network card for Intel 7260-n (300M lower model), can be replaced and upgraded to this card - network card for Intel 7260 AC (5g-ac supports 867M). 4.Wireless common sense: it shows that 867M is the highest frequency. Affected by the operating environment, the transmitting power of the router, and the actual use of the equipment, the signal fluctuation within 10 meters of the near 5G signal is measure 5.Made of high quality material - Service longer. Specification Features: Special for Lenovo /ThinkPad, two FRU No.: 04X6007 /00JT547, delivered randomly. Compatible machine: for Tinkpad: T440 /T440S /T440P /X230S /X240 /X240S /L440 /W540, etc. Network card for Intel 7260-n (300M lower model), can be replaced and upgraded to this card - network card for Intel 7260 AC (5g-ac supports 867M). Wireless common sense: it shows that 867M is the highest frequency. Affected by the operating environment, the transmitting power of the router, and the actual use of the equipment, the signal fluctuation within 10 meters of the near 5G signal is measured as 500M-867M, which is normal. Made of high quality material - Service longer. Specification: Model: for intel 7260AC Transmission rate: 867Mbps Support protocol: 802.11ac Interface type: NGFF/M2 Working frequency: 2.4g/5g Size: approx. 3.1 * 2.2 * 0.2 cm / 0.4 * 0.9 * 0.1 inch Package List: Network card * 1 Package List