Sierra Wireless 7710 LTE mini card modem. These do require a mini card (PCI-E) slot to use. Drivers and specifications available here:
https://source.sierrawireless.com/devices/mc-series/mc7710/

Can be used for Raspberry Pi if you purchase a Mini PCI-E to USB Adapter with SIM 8Pin Card Slot for WWAN/LTE Module. 
Antenna cables can be purchased separately and you would need a something like a RP-SMA to MHF4 Coaxial Cable.

Only module sold, no additional cables included. 
Price is for a single modem.