Novatel Broadband2Go User Manual page 60

USB
Universal Serial Bus. A connection type originally for computer
peripherals such as printers, keyboards, modems and now many
more things. The connection standard has expanded beyond
computer peripherals to include mobile phones, MP3 players, and
other devices.
VPN
Virtual Private Network. A way to communicate through a
dedicated server securely to a corporate network over the Internet.
WAN / WWAN
Wide Area Network (WAN). A computer network covering a broad
geographical area. WANs are used to connect local area networks
(LANs) together, so that users and computers in one location can
communicate with users and computers in other locations.
WWAN
Wireless Wide Area Network (WWAN). Also called "wireless
broadband" or "broadband wireless, " wireless WANs (WWANs)
use cellular towers to transmit a wireless signal over a range of
several miles to a mobile device. Compare to wireless Wi-Fi LANs
(WLANs), which span only a few hundred feet and generally only
to stationary devices.