The Sierra Wireless MC7700 PCI Express Mini Card is a compact, lightweight, wireless LTE-, and UMTS-based modem, designed to be AT&T certified.  Support Linux, Android, Window7/CE/Mobile drivers.

LTE: Band 4 (AWS): 1700 / 2100 MHz Band 17: 700 MHz

UMTS (WCDMA)/HSDPA/HSUPA/HSPA+: Band 1 (2100 MHz)
Band 2 (1900 MHz)
Band 5 (850 MHz)
Band 6 (800 MHz)

GSM/GPRS/EDGE:GSM 850 (850 MHz)
GSM 900 (900 MHz)
DCS 1800 (1800 MHz)
PCS 1900 (1900 MHz)

Operating temperature range: -30 °C to +60 °C