... Band 3G (850 /900 / 1900 / 2100 MHz), Plug and Play for Windows and Mac Dimensions: 77(h) x 28.5(w) x ... .2mm(d) System Requirements PC User: Microsoft Windows 7, Windows Vista (SP1 recommended), or Windows XP SP3 System Requirements Mac User: Mac OS ... , 2G GSM /GPRS/EDG: E850/900/1800/1900 OS Supported: Windows XP, Vista, Windows 7, Mac, Linux