... XP,Windows 7,Windows Vista,UBUNTU 8.04,Mac os x 10.4 or laterSelling point:High speed transmit rate (Downlink ... :windows 2000,XP,Vista,Win7,UBUNTU 8.04,Mac os x 10.4 and later Environmental Specifications:Operation Temperature: -20~55Storage ... ~1785MHz 1805~1880MHzPCS1900 1850~1910MHz 1930~1990MHzDimension: 88(L) x 26(W) x 10(H) mmWeight: 23g KMT-021 usb sim modem ...