... connected, CPU: Qualcomm MSM6280 2. Windows2000, Windows XP, Windows Vista, Win7... 4g usb wireless modem 1901C-21M Model No: ... 1901C-21M Product Description1)Network Technology: HSPA+, HSUPA, HSDPA, HSPA, UMTS, EDGE, GPRS, GSM 2 ... Factor: USB 8)System Requirements: USB Port (2.0 recommended) 9)Device Dimensions: 66 mm (L ... Speed 5.76 Mbps, Max Downlink Speed 21 Mbps