The Sony Ericsson Device 0017 USB WMC Modem Windows driver is a software package that allows your computer to communicate with a Sony Ericsson mobile device (such as a smartphone or a feature phone) when it's connected via USB. Specifically, this driver supports the WMC (Wireless Modem Connection) functionality, which allows the phone to act as a modem for internet connectivity. In simpler terms, it enables you to use the mobile phone's data connection on your PC, often through a process called tethering.

This driver is typically used with Sony Ericsson phones that support USB tethering or mobile broadband features, allowing your device to function as a mobile data modem when connected to your computer.