UMTS 2100MHz GSM/GPRS/EDGE(850/900/1800/1900MHz) Support:HSDPA data transfer speed up to 7.2Mbps HSUPA date transfer speed up to 5.76Mbps. Support PC voice (optional) and SMS services Support data statistics Micro SD card reader (up to 4GB) Plug & Play Support Windows 2000/XP/Vista and Mac Operating Systems Weight:30g Size Dimensions: 70.1¡Á25.6¡Á11.6mm. The Huawei E1750 HSPA USB Modem is an ultra slim USB modem that is ideal for users who need high speed data on the move. The Huawei E1750 HSPA USB Modem provides the latest plug and play USB modem solution with a modern elegant design. Installation is straight forward plug and play and does not require any additional software or drivers. Simply place your data enabled SIM (not included) into the Huawei E1750 HSPA USB Modem and plug modem into the USB slot on your laptop. Support Windows 2000/XP/Vista and Mac Operating Systems Weight:30g Size Dimensions: 70.1¡Á25.6¡Á11.6mm.