Features: 1.This wifi card supports GPRS / EDGE, WCDMA, LTE, EV?DO Version A, CDMA 1xRTT Frequency Band. 2.The loading speed can reach 100 Mbps, and the upload speed can reach 50 Mbps. 3.The network card is suitable for ThinkPad L440, T431s, T440p, ThinkPad X1 X240, etc.. 4.The wifi adapter supports a wide variety of frequencies, a wide range of applications, and a fast speed. 5.This wireless card is the best substitute for broken, damaged/faulty module cards. specification:Item Type: WiFi Card Material: PCB Color: Green Chip: EM7355 Loading Speed: 100 Mbps (Maximum) Upload Speed: 50 Mbps (Maximum) Frequency Band: GPRS / EDGE850/900/1800/1900 MHzWCDMA2100/1900/800/850/1700 MHzLTE2100/1900/700B17/ 850/700B13MHzEV-DO Version A800/1900 MHzCDMA 1xRTT800/1900 MHz Applicable Equipment: for ThinkPad L440, L540, for ThinkPad T431s, T440, T440s, T440p, T540P, W540, X240, for ThinkPad X1 Carbon (Machine Type: 20A7, 20A8) X240 T440 T440S T431S PackageList:1 x Network card 1 x Screw