... card memory Support Win7,Mac OS USB interface 2.75g edge usb modem Highlights ,The product is ... laptop or computer directly , take and use conveniently.2,The data speed , Under HSUPA network, the max ... download up to7.2 Mbps.3,The SIM card separates from machine, ... voltage 5VWorking currentMax500mAWork temperature -20~55 °C Saving temperature -30~75 °C 2.75g edge usb modem