The Novatel Wireless Merlin CDMA EV-DO Modem is a mobile broadband device that provides high-speed internet access through the CDMA (Code Division Multiple Access) network. It's typically used with laptops and desktops to connect to the internet via a USB or PCMCIA (older models) card. The EV-DO (Evolution-Data Optimized) technology allows fast mobile data transfer over the 3G network, primarily used by Verizon Wireless, Sprint, and other CDMA network carriers.

To use this modem on a Windows computer, you'll need to install the appropriate driver so that your operating system can recognize and communicate with the device.