You can go through the windows help centre.
Where you can find whether the modem is compatible to windows or not.
To check for the latest drivers
In the search box next to the Start button on the taskbar, type device manager, and then select Device Manager from the list of results
In Device Manager, select Network adapters > the network adapter name.
Press and hold (or right-click) the network adapter name, and then select Update driver > Search automatically for updated driver software. Follow the steps, then select Close.
If a new driver is found, it’ll be downloaded and installed automatically.
After you install the updated driver, select the Start button > Power > Restart if you're asked to restart, and see if that fixes the connection issue.