Mobile Broadband Wireless WAN 3G Card 60Y3297 H5321w for IBM Thinkpad E420,E420S ,E520,E520S E435,E535,E335 W520 W530 UMTS Bands 850/900/1900/2100 GSM Bands 850/900/1800/1900 Driver Support: Windows XP, Windows Vista, Windows 7, GNU + Linux (Patch available for kernels &lt; 2.6.38) Android (RIL), MeeGo, Chrome OS, Note: this wireless card could only work on IBM/Lenovo/Thinkpad version laptop Speeds: HSPA Evolution Data Speed: D/L 21Mbps U/L 5.76Mbps