Computers, Office - Components, Accessories – Modems are in stock at DigiKey. Order Now! Computers, Office - Components, Accessories ship same day. The nRF offers a compact solution for cellular IoT (cIoT) by integrating an application MCU, a full LTE modem, a receiver front-end (RF), and power. Here are drivers Free and files for the most popular Fax & Modem & ISDN. Direct links to Drivers, BIOS, Utilities, Firmaware and Manuals for downloads.