3g dongle download speed max 21 mbps max upload speed 576 mbps data transfers edge gprs gsm hsdpa hspa hsupa umts frequency bands 3g 2100mhz 3g 900mhz 2g 850mhz 2g 900mhz 2g 1800mhz 2g 1900mhz interface 1x usb 20 operating systems windows 7 mac os windows xp windows vista windows 81 linux series huawei e sim card mini sim status indicator led colour white dimensions 11 x 27 x 84 mm weight 30 g