Nokia CS-12 Unlocked 3G 14.4 Mbps GSM Mobile Broadband Aircard Modem Unlocked for any Global GSM Carrier with a data activated SIM Card operating in the frequencies supported for this Modem. SIM Card is Not Included 3G: HSDPA/UMTS 850/1900/2100MHz 2G: GSM 850/900/1800/1900MHz Download speeds of up to 14.4 Mbps, and upload speeds of up to 5.76 Mbps Compatible with Windows XP, Windows Vista, Windows 7, Linux (tested with Ubuntu), and Mac OS (10.4 and newer). Send and receive SMSs while on the go, or use a high-speed internet connection