usb modem
1. Always on, always connected, CPU: Qualcomm MSM6280
2. Windows2000, Windows XP, Windows Vista, Win7...

4g usb wireless modem 1901C-21M 

Model No: 1901C-21M

Product Description

1)Network Technology: HSPA+, HSUPA, HSDPA, HSPA, UMTS, EDGE, GPRS, GSM
2)Frequency Bands: WCDMA 850/1900/2100/MHz, EDGE/GPRS/GSM 850/900/1800/1900 MHz
3)Antenna Diversity Support Yes
4)Operating System Support: Windows 7, Windows Vista, Windows XP, Linux Ubuntu 9.04, Mac OS X
5)Operating Temperature: 0 to 45 degrees Celsius
6) Storage Temperature: -40 to 85 degrees Celsius
7)Form Factor: USB
8)System Requirements: USB Port (2.0 recommended)
9)Device Dimensions: 66 mm (L) x 26 mm (W) x 13 mm (H),
10)Weight: 30 g,
11)Volume: 19.5 CC
12)Max Uplink Speed 5.76 Mbps, Max Downlink Speed 21 Mbps