I just read that the unit I wanted to buy which is from Trekstor but based on Huawei technology has the following. Can anyone tell me if it is then OK for use in the USA? I know Dubai Stu said 800 and 2100 would be useful, but still, what does anyone think of this?:

HSPA/UMTS: 2100 MHz EDGE/GPRS/GSM: 850/900/1800/1900MHz.

It also says WLAN: IEEE 802.11b (11 MBit/s)? , IEEE 802.11g (54 MBit/s)? , (für max. 5 connections)Verschlüsselung: 256 Bit WPA -PSK, 256 Bit WPA2 -PSK
Hi-Speed USB 2.0 (Mini-USB)
microSD-Kartenslot (max. 32 GB)
Standard UMTS SIM für 6-Pin SIM-Einschübe